Home / 131,024.38-180,812.74-74,435.76

Finding the Fourth Proportional to 131,024.38, 180,812.74 and 74,435.76

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Solution

The fourth proportional to 131,024.38, 180,812.74 and 74,435.76 is: 102,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,024.38 : 180,812.74 = 74,435.76 : x
  2. Step 2: Convert to fraction form
    131,024.38/180,812.74 = 74,435.76/x
  3. Step 3: Cross multiply
    131,024.38x = 180,812.74 × 74,435.76
  4. Step 4: Simplify right side
    131,024.38x = 13,458,933,719.58
  5. Step 5: Solve for x
    x = 13,458,933,719.58/131,024.38
  6. Step 6: Final answer
    x = 102,720.84

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1.5x scale

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.