Home / 130,731.96-180,406.60-74,142.12

Finding the Fourth Proportional to 130,731.96, 180,406.60 and 74,142.12

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Solution

The fourth proportional to 130,731.96, 180,406.60 and 74,142.12 is: 102,314.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,731.96 : 180,406.60 = 74,142.12 : x
  2. Step 2: Convert to fraction form
    130,731.96/180,406.60 = 74,142.12/x
  3. Step 3: Cross multiply
    130,731.96x = 180,406.60 × 74,142.12
  4. Step 4: Simplify right side
    130,731.96x = 13,375,727,785.99
  5. Step 5: Solve for x
    x = 13,375,727,785.99/130,731.96
  6. Step 6: Final answer
    x = 102,314.14

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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.