Home / 131,019.42-180,807.40-74,433.90

Finding the Fourth Proportional to 131,019.42, 180,807.40 and 74,433.90

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Solution

The fourth proportional to 131,019.42, 180,807.40 and 74,433.90 is: 102,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,019.42 : 180,807.40 = 74,433.90 : x
  2. Step 2: Convert to fraction form
    131,019.42/180,807.40 = 74,433.90/x
  3. Step 3: Cross multiply
    131,019.42x = 180,807.40 × 74,433.90
  4. Step 4: Simplify right side
    131,019.42x = 13,458,199,930.86
  5. Step 5: Solve for x
    x = 13,458,199,930.86/131,019.42
  6. Step 6: Final answer
    x = 102,719.12

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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.