Home / 147,760.80-221,641.20-54,254.40

Finding the Fourth Proportional to 147,760.80, 221,641.20 and 54,254.40

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Solution

The fourth proportional to 147,760.80, 221,641.20 and 54,254.40 is: 81,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,760.80 : 221,641.20 = 54,254.40 : x
  2. Step 2: Convert to fraction form
    147,760.80/221,641.20 = 54,254.40/x
  3. Step 3: Cross multiply
    147,760.80x = 221,641.20 × 54,254.40
  4. Step 4: Simplify right side
    147,760.80x = 12,025,010,321.28
  5. Step 5: Solve for x
    x = 12,025,010,321.28/147,760.80
  6. Step 6: Final answer
    x = 81,381.60

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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.