Home / 88,451.72-121,980.03-68,276.78

Finding the Fourth Proportional to 88,451.72, 121,980.03 and 68,276.78

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Solution

The fourth proportional to 88,451.72, 121,980.03 and 68,276.78 is: 94,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,451.72 : 121,980.03 = 68,276.78 : x
  2. Step 2: Convert to fraction form
    88,451.72/121,980.03 = 68,276.78/x
  3. Step 3: Cross multiply
    88,451.72x = 121,980.03 × 68,276.78
  4. Step 4: Simplify right side
    88,451.72x = 8,328,403,672.70
  5. Step 5: Solve for x
    x = 8,328,403,672.70/88,451.72
  6. Step 6: Final answer
    x = 94,157.62

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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.