Home / 103,039,004.20-154,558,506.30-77,340,879.40

Finding the Fourth Proportional to 103,039,004.20, 154,558,506.30 and 77,340,879.40

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Solution

The fourth proportional to 103,039,004.20, 154,558,506.30 and 77,340,879.40 is: 116,011,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039,004.20 : 154,558,506.30 = 77,340,879.40 : x
  2. Step 2: Convert to fraction form
    103,039,004.20/154,558,506.30 = 77,340,879.40/x
  3. Step 3: Cross multiply
    103,039,004.20x = 154,558,506.30 × 77,340,879.40
  4. Step 4: Simplify right side
    103,039,004.20x = 11,953,690,795,992,442
  5. Step 5: Solve for x
    x = 11,953,690,795,992,442/103,039,004.20
  6. Step 6: Final answer
    x = 116,011,319.10

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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.