Home / 138,834.54-191,591.82-75,172.50

Finding the Fourth Proportional to 138,834.54, 191,591.82 and 75,172.50

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Solution

The fourth proportional to 138,834.54, 191,591.82 and 75,172.50 is: 103,738.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,834.54 : 191,591.82 = 75,172.50 : x
  2. Step 2: Convert to fraction form
    138,834.54/191,591.82 = 75,172.50/x
  3. Step 3: Cross multiply
    138,834.54x = 191,591.82 × 75,172.50
  4. Step 4: Simplify right side
    138,834.54x = 14,402,436,088.95
  5. Step 5: Solve for x
    x = 14,402,436,088.95/138,834.54
  6. Step 6: Final answer
    x = 103,738.13

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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.