Home / 138,694.13-191,397.43-75,031.94

Finding the Fourth Proportional to 138,694.13, 191,397.43 and 75,031.94

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Solution

The fourth proportional to 138,694.13, 191,397.43 and 75,031.94 is: 103,543.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694.13 : 191,397.43 = 75,031.94 : x
  2. Step 2: Convert to fraction form
    138,694.13/191,397.43 = 75,031.94/x
  3. Step 3: Cross multiply
    138,694.13x = 191,397.43 × 75,031.94
  4. Step 4: Simplify right side
    138,694.13x = 14,360,921,056.20
  5. Step 5: Solve for x
    x = 14,360,921,056.20/138,694.13
  6. Step 6: Final answer
    x = 103,543.83

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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.