Home / 147,620.80-221,431.20-54,114.40

Finding the Fourth Proportional to 147,620.80, 221,431.20 and 54,114.40

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Solution

The fourth proportional to 147,620.80, 221,431.20 and 54,114.40 is: 81,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,620.80 : 221,431.20 = 54,114.40 : x
  2. Step 2: Convert to fraction form
    147,620.80/221,431.20 = 54,114.40/x
  3. Step 3: Cross multiply
    147,620.80x = 221,431.20 × 54,114.40
  4. Step 4: Simplify right side
    147,620.80x = 11,982,616,529.28
  5. Step 5: Solve for x
    x = 11,982,616,529.28/147,620.80
  6. Step 6: Final answer
    x = 81,171.60

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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.