Home / 89,929.46-135,047.28-86,167.82

Finding the Fourth Proportional to 89,929.46, 135,047.28 and 86,167.82

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Solution

The fourth proportional to 89,929.46, 135,047.28 and 86,167.82 is: 129,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,929.46 : 135,047.28 = 86,167.82 : x
  2. Step 2: Convert to fraction form
    89,929.46/135,047.28 = 86,167.82/x
  3. Step 3: Cross multiply
    89,929.46x = 135,047.28 × 86,167.82
  4. Step 4: Simplify right side
    89,929.46x = 11,636,729,039.29
  5. Step 5: Solve for x
    x = 11,636,729,039.29/89,929.46
  6. Step 6: Final answer
    x = 129,398.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.