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Finding the Fourth Proportional to 144,010.20, 216,015.30 and 81,024.60

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Solution

The fourth proportional to 144,010.20, 216,015.30 and 81,024.60 is: 121,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,010.20 : 216,015.30 = 81,024.60 : x
  2. Step 2: Convert to fraction form
    144,010.20/216,015.30 = 81,024.60/x
  3. Step 3: Cross multiply
    144,010.20x = 216,015.30 × 81,024.60
  4. Step 4: Simplify right side
    144,010.20x = 17,502,553,276.38
  5. Step 5: Solve for x
    x = 17,502,553,276.38/144,010.20
  6. Step 6: Final answer
    x = 121,536.90

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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.