Home / 131,381,772.96-181,299,519.72-72,640,909.92

Finding the Fourth Proportional to 131,381,772.96, 181,299,519.72 and 72,640,909.92

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Solution

The fourth proportional to 131,381,772.96, 181,299,519.72 and 72,640,909.92 is: 100,240,404.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,381,772.96 : 181,299,519.72 = 72,640,909.92 : x
  2. Step 2: Convert to fraction form
    131,381,772.96/181,299,519.72 = 72,640,909.92/x
  3. Step 3: Cross multiply
    131,381,772.96x = 181,299,519.72 × 72,640,909.92
  4. Step 4: Simplify right side
    131,381,772.96x = 13,169,762,080,519,784
  5. Step 5: Solve for x
    x = 13,169,762,080,519,784/131,381,772.96
  6. Step 6: Final answer
    x = 100,240,404.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.