Home / 120,142,962.72-180,107,565.12-43,448,940

Finding the Fourth Proportional to 120,142,962.72, 180,107,565.12 and 43,448,940

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Solution

The fourth proportional to 120,142,962.72, 180,107,565.12 and 43,448,940 is: 65,134,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,142,962.72 : 180,107,565.12 = 43,448,940 : x
  2. Step 2: Convert to fraction form
    120,142,962.72/180,107,565.12 = 43,448,940/x
  3. Step 3: Cross multiply
    120,142,962.72x = 180,107,565.12 × 43,448,940
  4. Step 4: Simplify right side
    120,142,962.72x = 7,825,482,790,444,973
  5. Step 5: Solve for x
    x = 7,825,482,790,444,973/120,142,962.72
  6. Step 6: Final answer
    x = 65,134,757.90

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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.