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Finding the Fourth Proportional to 86,593.60, 130,084.80 and 83,288.80

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Solution

The fourth proportional to 86,593.60, 130,084.80 and 83,288.80 is: 125,120.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,593.60 : 130,084.80 = 83,288.80 : x
  2. Step 2: Convert to fraction form
    86,593.60/130,084.80 = 83,288.80/x
  3. Step 3: Cross multiply
    86,593.60x = 130,084.80 × 83,288.80
  4. Step 4: Simplify right side
    86,593.60x = 10,834,606,890.24
  5. Step 5: Solve for x
    x = 10,834,606,890.24/86,593.60
  6. Step 6: Final answer
    x = 125,120.18

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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.