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Finding the Fourth Proportional to 128,117.10, 192,175.65 and 88,751.10

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Solution

The fourth proportional to 128,117.10, 192,175.65 and 88,751.10 is: 133,126.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,117.10 : 192,175.65 = 88,751.10 : x
  2. Step 2: Convert to fraction form
    128,117.10/192,175.65 = 88,751.10/x
  3. Step 3: Cross multiply
    128,117.10x = 192,175.65 × 88,751.10
  4. Step 4: Simplify right side
    128,117.10x = 17,055,800,330.72
  5. Step 5: Solve for x
    x = 17,055,800,330.72/128,117.10
  6. Step 6: Final answer
    x = 133,126.65

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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.