Home / 147,542.40-203,626.80-90,169.92

Finding the Fourth Proportional to 147,542.40, 203,626.80 and 90,169.92

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Solution

The fourth proportional to 147,542.40, 203,626.80 and 90,169.92 is: 124,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,542.40 : 203,626.80 = 90,169.92 : x
  2. Step 2: Convert to fraction form
    147,542.40/203,626.80 = 90,169.92/x
  3. Step 3: Cross multiply
    147,542.40x = 203,626.80 × 90,169.92
  4. Step 4: Simplify right side
    147,542.40x = 18,361,012,265.86
  5. Step 5: Solve for x
    x = 18,361,012,265.86/147,542.40
  6. Step 6: Final answer
    x = 124,445.67

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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.