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Finding the Fourth Proportional to 128,151.46, 176,932.14 and 114,699.38

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Solution

The fourth proportional to 128,151.46, 176,932.14 and 114,699.38 is: 158,359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.46 : 176,932.14 = 114,699.38 : x
  2. Step 2: Convert to fraction form
    128,151.46/176,932.14 = 114,699.38/x
  3. Step 3: Cross multiply
    128,151.46x = 176,932.14 × 114,699.38
  4. Step 4: Simplify right side
    128,151.46x = 20,294,006,760.07
  5. Step 5: Solve for x
    x = 20,294,006,760.07/128,151.46
  6. Step 6: Final answer
    x = 158,359.54

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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.