Home / 137,680.26-189,998.54-77,256.53

Finding the Fourth Proportional to 137,680.26, 189,998.54 and 77,256.53

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Solution

The fourth proportional to 137,680.26, 189,998.54 and 77,256.53 is: 106,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,680.26 : 189,998.54 = 77,256.53 : x
  2. Step 2: Convert to fraction form
    137,680.26/189,998.54 = 77,256.53/x
  3. Step 3: Cross multiply
    137,680.26x = 189,998.54 × 77,256.53
  4. Step 4: Simplify right side
    137,680.26x = 14,678,626,569.19
  5. Step 5: Solve for x
    x = 14,678,626,569.19/137,680.26
  6. Step 6: Final answer
    x = 106,613.88

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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.