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Finding the Fourth Proportional to 130,291.20, 195,436.80 and 88,819.20

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Solution

The fourth proportional to 130,291.20, 195,436.80 and 88,819.20 is: 133,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,291.20 : 195,436.80 = 88,819.20 : x
  2. Step 2: Convert to fraction form
    130,291.20/195,436.80 = 88,819.20/x
  3. Step 3: Cross multiply
    130,291.20x = 195,436.80 × 88,819.20
  4. Step 4: Simplify right side
    130,291.20x = 17,358,540,226.56
  5. Step 5: Solve for x
    x = 17,358,540,226.56/130,291.20
  6. Step 6: Final answer
    x = 133,228.80

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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.