Home / 90,020.40-134,998.20-45,632.40

Finding the Fourth Proportional to 90,020.40, 134,998.20 and 45,632.40

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Solution

The fourth proportional to 90,020.40, 134,998.20 and 45,632.40 is: 68,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,020.40 : 134,998.20 = 45,632.40 : x
  2. Step 2: Convert to fraction form
    90,020.40/134,998.20 = 45,632.40/x
  3. Step 3: Cross multiply
    90,020.40x = 134,998.20 × 45,632.40
  4. Step 4: Simplify right side
    90,020.40x = 6,160,291,861.68
  5. Step 5: Solve for x
    x = 6,160,291,861.68/90,020.40
  6. Step 6: Final answer
    x = 68,432.18

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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.