Home / 131,404.34-181,338.16-74,815.70

Finding the Fourth Proportional to 131,404.34, 181,338.16 and 74,815.70

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Solution

The fourth proportional to 131,404.34, 181,338.16 and 74,815.70 is: 103,245.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,404.34 : 181,338.16 = 74,815.70 : x
  2. Step 2: Convert to fraction form
    131,404.34/181,338.16 = 74,815.70/x
  3. Step 3: Cross multiply
    131,404.34x = 181,338.16 × 74,815.70
  4. Step 4: Simplify right side
    131,404.34x = 13,566,941,377.11
  5. Step 5: Solve for x
    x = 13,566,941,377.11/131,404.34
  6. Step 6: Final answer
    x = 103,245.76

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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.