Home / 147,612.20-221,418.30-85,209.80

Finding the Fourth Proportional to 147,612.20, 221,418.30 and 85,209.80

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Solution

The fourth proportional to 147,612.20, 221,418.30 and 85,209.80 is: 127,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,612.20 : 221,418.30 = 85,209.80 : x
  2. Step 2: Convert to fraction form
    147,612.20/221,418.30 = 85,209.80/x
  3. Step 3: Cross multiply
    147,612.20x = 221,418.30 × 85,209.80
  4. Step 4: Simplify right side
    147,612.20x = 18,867,009,059.34
  5. Step 5: Solve for x
    x = 18,867,009,059.34/147,612.20
  6. Step 6: Final answer
    x = 127,814.70

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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.