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Finding the Fourth Proportional to 128,055.65, 192,034.24 and 88,492.82

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Solution

The fourth proportional to 128,055.65, 192,034.24 and 88,492.82 is: 132,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,055.65 : 192,034.24 = 88,492.82 : x
  2. Step 2: Convert to fraction form
    128,055.65/192,034.24 = 88,492.82/x
  3. Step 3: Cross multiply
    128,055.65x = 192,034.24 × 88,492.82
  4. Step 4: Simplify right side
    128,055.65x = 16,993,650,252.75
  5. Step 5: Solve for x
    x = 16,993,650,252.75/128,055.65
  6. Step 6: Final answer
    x = 132,705.20

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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.