Home / 147,686.40-221,385.60-84,441.60

Finding the Fourth Proportional to 147,686.40, 221,385.60 and 84,441.60

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Solution

The fourth proportional to 147,686.40, 221,385.60 and 84,441.60 is: 126,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,686.40 : 221,385.60 = 84,441.60 : x
  2. Step 2: Convert to fraction form
    147,686.40/221,385.60 = 84,441.60/x
  3. Step 3: Cross multiply
    147,686.40x = 221,385.60 × 84,441.60
  4. Step 4: Simplify right side
    147,686.40x = 18,694,154,280.96
  5. Step 5: Solve for x
    x = 18,694,154,280.96/147,686.40
  6. Step 6: Final answer
    x = 126,580.07

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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.