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Finding the Fourth Proportional to 158,418.80, 237,672.24 and 128,763.20

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Solution

The fourth proportional to 158,418.80, 237,672.24 and 128,763.20 is: 193,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,418.80 : 237,672.24 = 128,763.20 : x
  2. Step 2: Convert to fraction form
    158,418.80/237,672.24 = 128,763.20/x
  3. Step 3: Cross multiply
    158,418.80x = 237,672.24 × 128,763.20
  4. Step 4: Simplify right side
    158,418.80x = 30,603,438,173.57
  5. Step 5: Solve for x
    x = 30,603,438,173.57/158,418.80
  6. Step 6: Final answer
    x = 193,180.60

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1.5x scale

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.