Home / 130,631.90-180,255.90-79,626.20

Finding the Fourth Proportional to 130,631.90, 180,255.90 and 79,626.20

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Solution

The fourth proportional to 130,631.90, 180,255.90 and 79,626.20 is: 109,874.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,631.90 : 180,255.90 = 79,626.20 : x
  2. Step 2: Convert to fraction form
    130,631.90/180,255.90 = 79,626.20/x
  3. Step 3: Cross multiply
    130,631.90x = 180,255.90 × 79,626.20
  4. Step 4: Simplify right side
    130,631.90x = 14,353,092,344.58
  5. Step 5: Solve for x
    x = 14,353,092,344.58/130,631.90
  6. Step 6: Final answer
    x = 109,874.33

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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.