Home / 153,013.60-229,520.40-128,519.20

Finding the Fourth Proportional to 153,013.60, 229,520.40 and 128,519.20

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Solution

The fourth proportional to 153,013.60, 229,520.40 and 128,519.20 is: 192,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,013.60 : 229,520.40 = 128,519.20 : x
  2. Step 2: Convert to fraction form
    153,013.60/229,520.40 = 128,519.20/x
  3. Step 3: Cross multiply
    153,013.60x = 229,520.40 × 128,519.20
  4. Step 4: Simplify right side
    153,013.60x = 29,497,778,191.68
  5. Step 5: Solve for x
    x = 29,497,778,191.68/153,013.60
  6. Step 6: Final answer
    x = 192,778.80

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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.