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Finding the Fourth Proportional to 131,497.64, 181,422.42 and 74,868.92

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Solution

The fourth proportional to 131,497.64, 181,422.42 and 74,868.92 is: 103,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,497.64 : 181,422.42 = 74,868.92 : x
  2. Step 2: Convert to fraction form
    131,497.64/181,422.42 = 74,868.92/x
  3. Step 3: Cross multiply
    131,497.64x = 181,422.42 × 74,868.92
  4. Step 4: Simplify right side
    131,497.64x = 13,582,900,649.19
  5. Step 5: Solve for x
    x = 13,582,900,649.19/131,497.64
  6. Step 6: Final answer
    x = 103,293.87

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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.