Home / 87,659.22-121,025.16-67,478.16

Finding the Fourth Proportional to 87,659.22, 121,025.16 and 67,478.16

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Solution

The fourth proportional to 87,659.22, 121,025.16 and 67,478.16 is: 93,162.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.22 : 121,025.16 = 67,478.16 : x
  2. Step 2: Convert to fraction form
    87,659.22/121,025.16 = 67,478.16/x
  3. Step 3: Cross multiply
    87,659.22x = 121,025.16 × 67,478.16
  4. Step 4: Simplify right side
    87,659.22x = 8,166,555,110.51
  5. Step 5: Solve for x
    x = 8,166,555,110.51/87,659.22
  6. Step 6: Final answer
    x = 93,162.53

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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.