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Finding the Fourth Proportional to 144,057.60, 216,214.40 and 84,819.20

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Solution

The fourth proportional to 144,057.60, 216,214.40 and 84,819.20 is: 127,304.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,057.60 : 216,214.40 = 84,819.20 : x
  2. Step 2: Convert to fraction form
    144,057.60/216,214.40 = 84,819.20/x
  3. Step 3: Cross multiply
    144,057.60x = 216,214.40 × 84,819.20
  4. Step 4: Simplify right side
    144,057.60x = 18,339,132,436.48
  5. Step 5: Solve for x
    x = 18,339,132,436.48/144,057.60
  6. Step 6: Final answer
    x = 127,304.16

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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.