Home / 138,800.95-191,545.27-75,138.69

Finding the Fourth Proportional to 138,800.95, 191,545.27 and 75,138.69

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Solution

The fourth proportional to 138,800.95, 191,545.27 and 75,138.69 is: 103,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,800.95 : 191,545.27 = 75,138.69 : x
  2. Step 2: Convert to fraction form
    138,800.95/191,545.27 = 75,138.69/x
  3. Step 3: Cross multiply
    138,800.95x = 191,545.27 × 75,138.69
  4. Step 4: Simplify right side
    138,800.95x = 14,392,460,663.50
  5. Step 5: Solve for x
    x = 14,392,460,663.50/138,800.95
  6. Step 6: Final answer
    x = 103,691.37

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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.