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Finding the Fourth Proportional to 131,148.98, 181,000.96 and 74,568.86

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Solution

The fourth proportional to 131,148.98, 181,000.96 and 74,568.86 is: 102,913.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,148.98 : 181,000.96 = 74,568.86 : x
  2. Step 2: Convert to fraction form
    131,148.98/181,000.96 = 74,568.86/x
  3. Step 3: Cross multiply
    131,148.98x = 181,000.96 × 74,568.86
  4. Step 4: Simplify right side
    131,148.98x = 13,497,035,246.11
  5. Step 5: Solve for x
    x = 13,497,035,246.11/131,148.98
  6. Step 6: Final answer
    x = 102,913.76

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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.