Home / 142,126.80-212,909.40-92,241.60

Finding the Fourth Proportional to 142,126.80, 212,909.40 and 92,241.60

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Solution

The fourth proportional to 142,126.80, 212,909.40 and 92,241.60 is: 138,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,126.80 : 212,909.40 = 92,241.60 : x
  2. Step 2: Convert to fraction form
    142,126.80/212,909.40 = 92,241.60/x
  3. Step 3: Cross multiply
    142,126.80x = 212,909.40 × 92,241.60
  4. Step 4: Simplify right side
    142,126.80x = 19,639,103,711.04
  5. Step 5: Solve for x
    x = 19,639,103,711.04/142,126.80
  6. Step 6: Final answer
    x = 138,180.16

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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.