Home / 88,155.20-121,652.88-50,422.16

Finding the Fourth Proportional to 88,155.20, 121,652.88 and 50,422.16

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Solution

The fourth proportional to 88,155.20, 121,652.88 and 50,422.16 is: 69,581.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,155.20 : 121,652.88 = 50,422.16 : x
  2. Step 2: Convert to fraction form
    88,155.20/121,652.88 = 50,422.16/x
  3. Step 3: Cross multiply
    88,155.20x = 121,652.88 × 50,422.16
  4. Step 4: Simplify right side
    88,155.20x = 6,134,000,979.82
  5. Step 5: Solve for x
    x = 6,134,000,979.82/88,155.20
  6. Step 6: Final answer
    x = 69,581.84

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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.