Home / 138,117.29-190,537.43-89,715.92

Finding the Fourth Proportional to 138,117.29, 190,537.43 and 89,715.92

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Solution

The fourth proportional to 138,117.29, 190,537.43 and 89,715.92 is: 123,766.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,117.29 : 190,537.43 = 89,715.92 : x
  2. Step 2: Convert to fraction form
    138,117.29/190,537.43 = 89,715.92/x
  3. Step 3: Cross multiply
    138,117.29x = 190,537.43 × 89,715.92
  4. Step 4: Simplify right side
    138,117.29x = 17,094,239,425.62
  5. Step 5: Solve for x
    x = 17,094,239,425.62/138,117.29
  6. Step 6: Final answer
    x = 123,766.11

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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.