Home / 138,420,505.40-207,642,567.90-36,184,379

Finding the Fourth Proportional to 138,420,505.40, 207,642,567.90 and 36,184,379

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Solution

The fourth proportional to 138,420,505.40, 207,642,567.90 and 36,184,379 is: 54,279,655.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,420,505.40 : 207,642,567.90 = 36,184,379 : x
  2. Step 2: Convert to fraction form
    138,420,505.40/207,642,567.90 = 36,184,379/x
  3. Step 3: Cross multiply
    138,420,505.40x = 207,642,567.90 × 36,184,379
  4. Step 4: Simplify right side
    138,420,505.40x = 7,513,417,373,426,834
  5. Step 5: Solve for x
    x = 7,513,417,373,426,834/138,420,505.40
  6. Step 6: Final answer
    x = 54,279,655.69

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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.