Home / 120,931.59-181,419.20-49,815.42

Finding the Fourth Proportional to 120,931.59, 181,419.20 and 49,815.42

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Solution

The fourth proportional to 120,931.59, 181,419.20 and 49,815.42 is: 74,732.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,931.59 : 181,419.20 = 49,815.42 : x
  2. Step 2: Convert to fraction form
    120,931.59/181,419.20 = 49,815.42/x
  3. Step 3: Cross multiply
    120,931.59x = 181,419.20 × 49,815.42
  4. Step 4: Simplify right side
    120,931.59x = 9,037,473,644.06
  5. Step 5: Solve for x
    x = 9,037,473,644.06/120,931.59
  6. Step 6: Final answer
    x = 74,732.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.