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Finding the Fourth Proportional to 136,140.80, 204,211.20 and 130,017.20

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Solution

The fourth proportional to 136,140.80, 204,211.20 and 130,017.20 is: 195,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,140.80 : 204,211.20 = 130,017.20 : x
  2. Step 2: Convert to fraction form
    136,140.80/204,211.20 = 130,017.20/x
  3. Step 3: Cross multiply
    136,140.80x = 204,211.20 × 130,017.20
  4. Step 4: Simplify right side
    136,140.80x = 26,550,968,432.64
  5. Step 5: Solve for x
    x = 26,550,968,432.64/136,140.80
  6. Step 6: Final answer
    x = 195,025.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.