Home / 138,801.20-191,545.44-75,138.98

Finding the Fourth Proportional to 138,801.20, 191,545.44 and 75,138.98

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Solution

The fourth proportional to 138,801.20, 191,545.44 and 75,138.98 is: 103,691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.20 : 191,545.44 = 75,138.98 : x
  2. Step 2: Convert to fraction form
    138,801.20/191,545.44 = 75,138.98/x
  3. Step 3: Cross multiply
    138,801.20x = 191,545.44 × 75,138.98
  4. Step 4: Simplify right side
    138,801.20x = 14,392,528,985.25
  5. Step 5: Solve for x
    x = 14,392,528,985.25/138,801.20
  6. Step 6: Final answer
    x = 103,691.68

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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.