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Finding the Fourth Proportional to 142,719.60, 214,111.80 and 83,524.80

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Solution

The fourth proportional to 142,719.60, 214,111.80 and 83,524.80 is: 125,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,719.60 : 214,111.80 = 83,524.80 : x
  2. Step 2: Convert to fraction form
    142,719.60/214,111.80 = 83,524.80/x
  3. Step 3: Cross multiply
    142,719.60x = 214,111.80 × 83,524.80
  4. Step 4: Simplify right side
    142,719.60x = 17,883,645,272.64
  5. Step 5: Solve for x
    x = 17,883,645,272.64/142,719.60
  6. Step 6: Final answer
    x = 125,306.16

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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.