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Finding the Fourth Proportional to 124,882.40, 187,323.60 and 86,828.60

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Solution

The fourth proportional to 124,882.40, 187,323.60 and 86,828.60 is: 130,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,882.40 : 187,323.60 = 86,828.60 : x
  2. Step 2: Convert to fraction form
    124,882.40/187,323.60 = 86,828.60/x
  3. Step 3: Cross multiply
    124,882.40x = 187,323.60 × 86,828.60
  4. Step 4: Simplify right side
    124,882.40x = 16,265,045,934.96
  5. Step 5: Solve for x
    x = 16,265,045,934.96/124,882.40
  6. Step 6: Final answer
    x = 130,242.90

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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.