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Finding the Fourth Proportional to 128,044.60, 192,066.90 and 101,606.20

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Solution

The fourth proportional to 128,044.60, 192,066.90 and 101,606.20 is: 152,409.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,044.60 : 192,066.90 = 101,606.20 : x
  2. Step 2: Convert to fraction form
    128,044.60/192,066.90 = 101,606.20/x
  3. Step 3: Cross multiply
    128,044.60x = 192,066.90 × 101,606.20
  4. Step 4: Simplify right side
    128,044.60x = 19,515,187,854.78
  5. Step 5: Solve for x
    x = 19,515,187,854.78/128,044.60
  6. Step 6: Final answer
    x = 152,409.30

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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.