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Finding the Fourth Proportional to 128,092.89, 176,376.87 and 116,078.07

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Solution

The fourth proportional to 128,092.89, 176,376.87 and 116,078.07 is: 159,833.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,092.89 : 176,376.87 = 116,078.07 : x
  2. Step 2: Convert to fraction form
    128,092.89/176,376.87 = 116,078.07/x
  3. Step 3: Cross multiply
    128,092.89x = 176,376.87 × 116,078.07
  4. Step 4: Simplify right side
    128,092.89x = 20,473,486,662.24
  5. Step 5: Solve for x
    x = 20,473,486,662.24/128,092.89
  6. Step 6: Final answer
    x = 159,833.12

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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.