Home / 142,938.60-214,407.90-129,816.60

Finding the Fourth Proportional to 142,938.60, 214,407.90 and 129,816.60

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Solution

The fourth proportional to 142,938.60, 214,407.90 and 129,816.60 is: 194,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,938.60 : 214,407.90 = 129,816.60 : x
  2. Step 2: Convert to fraction form
    142,938.60/214,407.90 = 129,816.60/x
  3. Step 3: Cross multiply
    142,938.60x = 214,407.90 × 129,816.60
  4. Step 4: Simplify right side
    142,938.60x = 27,833,704,591.14
  5. Step 5: Solve for x
    x = 27,833,704,591.14/142,938.60
  6. Step 6: Final answer
    x = 194,724.90

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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.