Home / 138,760.83-191,490.05-75,098.68

Finding the Fourth Proportional to 138,760.83, 191,490.05 and 75,098.68

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Solution

The fourth proportional to 138,760.83, 191,490.05 and 75,098.68 is: 103,636.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,760.83 : 191,490.05 = 75,098.68 : x
  2. Step 2: Convert to fraction form
    138,760.83/191,490.05 = 75,098.68/x
  3. Step 3: Cross multiply
    138,760.83x = 191,490.05 × 75,098.68
  4. Step 4: Simplify right side
    138,760.83x = 14,380,649,697.16
  5. Step 5: Solve for x
    x = 14,380,649,697.16/138,760.83
  6. Step 6: Final answer
    x = 103,636.23

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1.5x scale

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.