Home / 136,901.13-188,921.50-76,472.65

Finding the Fourth Proportional to 136,901.13, 188,921.50 and 76,472.65

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Solution

The fourth proportional to 136,901.13, 188,921.50 and 76,472.65 is: 105,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,901.13 : 188,921.50 = 76,472.65 : x
  2. Step 2: Convert to fraction form
    136,901.13/188,921.50 = 76,472.65/x
  3. Step 3: Cross multiply
    136,901.13x = 188,921.50 × 76,472.65
  4. Step 4: Simplify right side
    136,901.13x = 14,447,327,746.98
  5. Step 5: Solve for x
    x = 14,447,327,746.98/136,901.13
  6. Step 6: Final answer
    x = 105,531.11

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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.