Home / 138,637,132.20-191,332,080.72-76,757,471.64

Finding the Fourth Proportional to 138,637,132.20, 191,332,080.72 and 76,757,471.64

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Solution

The fourth proportional to 138,637,132.20, 191,332,080.72 and 76,757,471.64 is: 105,932,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,637,132.20 : 191,332,080.72 = 76,757,471.64 : x
  2. Step 2: Convert to fraction form
    138,637,132.20/191,332,080.72 = 76,757,471.64/x
  3. Step 3: Cross multiply
    138,637,132.20x = 191,332,080.72 × 76,757,471.64
  4. Step 4: Simplify right side
    138,637,132.20x = 14,686,166,759,687,590
  5. Step 5: Solve for x
    x = 14,686,166,759,687,590/138,637,132.20
  6. Step 6: Final answer
    x = 105,932,418.87

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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.