Home / 139,938.52-193,115.28-76,275.04

Finding the Fourth Proportional to 139,938.52, 193,115.28 and 76,275.04

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Solution

The fourth proportional to 139,938.52, 193,115.28 and 76,275.04 is: 105,259.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,938.52 : 193,115.28 = 76,275.04 : x
  2. Step 2: Convert to fraction form
    139,938.52/193,115.28 = 76,275.04/x
  3. Step 3: Cross multiply
    139,938.52x = 193,115.28 × 76,275.04
  4. Step 4: Simplify right side
    139,938.52x = 14,729,875,706.61
  5. Step 5: Solve for x
    x = 14,729,875,706.61/139,938.52
  6. Step 6: Final answer
    x = 105,259.62

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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.