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Finding the Fourth Proportional to 131,568.87, 181,560.72 and 74,209.68

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Solution

The fourth proportional to 131,568.87, 181,560.72 and 74,209.68 is: 102,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,568.87 : 181,560.72 = 74,209.68 : x
  2. Step 2: Convert to fraction form
    131,568.87/181,560.72 = 74,209.68/x
  3. Step 3: Cross multiply
    131,568.87x = 181,560.72 × 74,209.68
  4. Step 4: Simplify right side
    131,568.87x = 13,473,562,931.77
  5. Step 5: Solve for x
    x = 13,473,562,931.77/131,568.87
  6. Step 6: Final answer
    x = 102,406.92

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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.