Home / 147,140.79-203,115.30-99,458.73

Finding the Fourth Proportional to 147,140.79, 203,115.30 and 99,458.73

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Solution

The fourth proportional to 147,140.79, 203,115.30 and 99,458.73 is: 137,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,140.79 : 203,115.30 = 99,458.73 : x
  2. Step 2: Convert to fraction form
    147,140.79/203,115.30 = 99,458.73/x
  3. Step 3: Cross multiply
    147,140.79x = 203,115.30 × 99,458.73
  4. Step 4: Simplify right side
    147,140.79x = 20,201,589,781.57
  5. Step 5: Solve for x
    x = 20,201,589,781.57/147,140.79
  6. Step 6: Final answer
    x = 137,294.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.