Home / 88,188.38-121,653.31-55,865.97

Finding the Fourth Proportional to 88,188.38, 121,653.31 and 55,865.97

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Solution

The fourth proportional to 88,188.38, 121,653.31 and 55,865.97 is: 77,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,188.38 : 121,653.31 = 55,865.97 : x
  2. Step 2: Convert to fraction form
    88,188.38/121,653.31 = 55,865.97/x
  3. Step 3: Cross multiply
    88,188.38x = 121,653.31 × 55,865.97
  4. Step 4: Simplify right side
    88,188.38x = 6,796,280,166.86
  5. Step 5: Solve for x
    x = 6,796,280,166.86/88,188.38
  6. Step 6: Final answer
    x = 77,065.48

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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.