Home / 90,379.20-135,627.36-68,243.52

Finding the Fourth Proportional to 90,379.20, 135,627.36 and 68,243.52

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Solution

The fourth proportional to 90,379.20, 135,627.36 and 68,243.52 is: 102,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,379.20 : 135,627.36 = 68,243.52 : x
  2. Step 2: Convert to fraction form
    90,379.20/135,627.36 = 68,243.52/x
  3. Step 3: Cross multiply
    90,379.20x = 135,627.36 × 68,243.52
  4. Step 4: Simplify right side
    90,379.20x = 9,255,688,454.71
  5. Step 5: Solve for x
    x = 9,255,688,454.71/90,379.20
  6. Step 6: Final answer
    x = 102,409.50

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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.