Home / 142,425.60-213,356.80-124,915.20

Finding the Fourth Proportional to 142,425.60, 213,356.80 and 124,915.20

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Solution

The fourth proportional to 142,425.60, 213,356.80 and 124,915.20 is: 187,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,425.60 : 213,356.80 = 124,915.20 : x
  2. Step 2: Convert to fraction form
    142,425.60/213,356.80 = 124,915.20/x
  3. Step 3: Cross multiply
    142,425.60x = 213,356.80 × 124,915.20
  4. Step 4: Simplify right side
    142,425.60x = 26,651,507,343.36
  5. Step 5: Solve for x
    x = 26,651,507,343.36/142,425.60
  6. Step 6: Final answer
    x = 187,125.82

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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.