Home / 147,966.40-221,949.60-85,604.80

Finding the Fourth Proportional to 147,966.40, 221,949.60 and 85,604.80

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Solution

The fourth proportional to 147,966.40, 221,949.60 and 85,604.80 is: 128,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,966.40 : 221,949.60 = 85,604.80 : x
  2. Step 2: Convert to fraction form
    147,966.40/221,949.60 = 85,604.80/x
  3. Step 3: Cross multiply
    147,966.40x = 221,949.60 × 85,604.80
  4. Step 4: Simplify right side
    147,966.40x = 18,999,951,118.08
  5. Step 5: Solve for x
    x = 18,999,951,118.08/147,966.40
  6. Step 6: Final answer
    x = 128,407.20

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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.