Home / 88,359.16-121,980.82-68,170.68

Finding the Fourth Proportional to 88,359.16, 121,980.82 and 68,170.68

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Solution

The fourth proportional to 88,359.16, 121,980.82 and 68,170.68 is: 94,110.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,359.16 : 121,980.82 = 68,170.68 : x
  2. Step 2: Convert to fraction form
    88,359.16/121,980.82 = 68,170.68/x
  3. Step 3: Cross multiply
    88,359.16x = 121,980.82 × 68,170.68
  4. Step 4: Simplify right side
    88,359.16x = 8,315,515,446.36
  5. Step 5: Solve for x
    x = 8,315,515,446.36/88,359.16
  6. Step 6: Final answer
    x = 94,110.39

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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.