Home / 142,429,128.30-213,643,692.45-85,033,500.30

Finding the Fourth Proportional to 142,429,128.30, 213,643,692.45 and 85,033,500.30

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Solution

The fourth proportional to 142,429,128.30, 213,643,692.45 and 85,033,500.30 is: 127,550,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,429,128.30 : 213,643,692.45 = 85,033,500.30 : x
  2. Step 2: Convert to fraction form
    142,429,128.30/213,643,692.45 = 85,033,500.30/x
  3. Step 3: Cross multiply
    142,429,128.30x = 213,643,692.45 × 85,033,500.30
  4. Step 4: Simplify right side
    142,429,128.30x = 18,166,870,986,040,180
  5. Step 5: Solve for x
    x = 18,166,870,986,040,180/142,429,128.30
  6. Step 6: Final answer
    x = 127,550,250.45

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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.