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Finding the Fourth Proportional to 138,694.91, 191,398.82 and 75,032.69

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Solution

The fourth proportional to 138,694.91, 191,398.82 and 75,032.69 is: 103,545.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694.91 : 191,398.82 = 75,032.69 : x
  2. Step 2: Convert to fraction form
    138,694.91/191,398.82 = 75,032.69/x
  3. Step 3: Cross multiply
    138,694.91x = 191,398.82 × 75,032.69
  4. Step 4: Simplify right side
    138,694.91x = 14,361,166,995.27
  5. Step 5: Solve for x
    x = 14,361,166,995.27/138,694.91
  6. Step 6: Final answer
    x = 103,545.02

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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.