Home / 79,403,853,721.20-119,105,780,581.80-78,852,855,692.40

Finding the Fourth Proportional to 79,403,853,721.20, 119,105,780,581.80 and 78,852,855,692.40

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Solution

The fourth proportional to 79,403,853,721.20, 119,105,780,581.80 and 78,852,855,692.40 is: 118,279,283,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,403,853,721.20 : 119,105,780,581.80 = 78,852,855,692.40 : x
  2. Step 2: Convert to fraction form
    79,403,853,721.20/119,105,780,581.80 = 78,852,855,692.40/x
  3. Step 3: Cross multiply
    79,403,853,721.20x = 119,105,780,581.80 × 78,852,855,692.40
  4. Step 4: Simplify right side
    79,403,853,721.20x = 9,391,830,928,347,332,870,144
  5. Step 5: Solve for x
    x = 9,391,830,928,347,332,870,144/79,403,853,721.20
  6. Step 6: Final answer
    x = 118,279,283,538.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.