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Finding the Fourth Proportional to 138,937.77, 191,733.75 and 75,275.73

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Solution

The fourth proportional to 138,937.77, 191,733.75 and 75,275.73 is: 103,880.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,937.77 : 191,733.75 = 75,275.73 : x
  2. Step 2: Convert to fraction form
    138,937.77/191,733.75 = 75,275.73/x
  3. Step 3: Cross multiply
    138,937.77x = 191,733.75 × 75,275.73
  4. Step 4: Simplify right side
    138,937.77x = 14,432,897,996.89
  5. Step 5: Solve for x
    x = 14,432,897,996.89/138,937.77
  6. Step 6: Final answer
    x = 103,880.31

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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.