Home / 130,988.16-180,763.92-71,372.16

Finding the Fourth Proportional to 130,988.16, 180,763.92 and 71,372.16

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Solution

The fourth proportional to 130,988.16, 180,763.92 and 71,372.16 is: 98,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,988.16 : 180,763.92 = 71,372.16 : x
  2. Step 2: Convert to fraction form
    130,988.16/180,763.92 = 71,372.16/x
  3. Step 3: Cross multiply
    130,988.16x = 180,763.92 × 71,372.16
  4. Step 4: Simplify right side
    130,988.16x = 12,901,511,420.47
  5. Step 5: Solve for x
    x = 12,901,511,420.47/130,988.16
  6. Step 6: Final answer
    x = 98,493.72

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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.