Home / 147,136.20-203,109.65-99,454.13

Finding the Fourth Proportional to 147,136.20, 203,109.65 and 99,454.13

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Solution

The fourth proportional to 147,136.20, 203,109.65 and 99,454.13 is: 137,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,136.20 : 203,109.65 = 99,454.13 : x
  2. Step 2: Convert to fraction form
    147,136.20/203,109.65 = 99,454.13/x
  3. Step 3: Cross multiply
    147,136.20x = 203,109.65 × 99,454.13
  4. Step 4: Simplify right side
    147,136.20x = 20,200,093,436.86
  5. Step 5: Solve for x
    x = 20,200,093,436.86/147,136.20
  6. Step 6: Final answer
    x = 137,288.40

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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.