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Finding the Fourth Proportional to 86,683, 130,073.10 and 86,022.04

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Solution

The fourth proportional to 86,683, 130,073.10 and 86,022.04 is: 129,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,683 : 130,073.10 = 86,022.04 : x
  2. Step 2: Convert to fraction form
    86,683/130,073.10 = 86,022.04/x
  3. Step 3: Cross multiply
    86,683x = 130,073.10 × 86,022.04
  4. Step 4: Simplify right side
    86,683x = 11,189,153,411.12
  5. Step 5: Solve for x
    x = 11,189,153,411.12/86,683
  6. Step 6: Final answer
    x = 129,081.29

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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.