Home / 128,032.62-176,685.21-71,442.78

Finding the Fourth Proportional to 128,032.62, 176,685.21 and 71,442.78

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Solution

The fourth proportional to 128,032.62, 176,685.21 and 71,442.78 is: 98,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,032.62 : 176,685.21 = 71,442.78 : x
  2. Step 2: Convert to fraction form
    128,032.62/176,685.21 = 71,442.78/x
  3. Step 3: Cross multiply
    128,032.62x = 176,685.21 × 71,442.78
  4. Step 4: Simplify right side
    128,032.62x = 12,622,882,587.28
  5. Step 5: Solve for x
    x = 12,622,882,587.28/128,032.62
  6. Step 6: Final answer
    x = 98,591.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.