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Finding the Fourth Proportional to 152,610.80, 229,025.55 and 85,980.20

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Solution

The fourth proportional to 152,610.80, 229,025.55 and 85,980.20 is: 129,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,610.80 : 229,025.55 = 85,980.20 : x
  2. Step 2: Convert to fraction form
    152,610.80/229,025.55 = 85,980.20/x
  3. Step 3: Cross multiply
    152,610.80x = 229,025.55 × 85,980.20
  4. Step 4: Simplify right side
    152,610.80x = 19,691,662,594.11
  5. Step 5: Solve for x
    x = 19,691,662,594.11/152,610.80
  6. Step 6: Final answer
    x = 129,031.91

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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.