Home / 81,125.51-121,702.29-36,162.87

Finding the Fourth Proportional to 81,125.51, 121,702.29 and 36,162.87

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Solution

The fourth proportional to 81,125.51, 121,702.29 and 36,162.87 is: 54,250.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,125.51 : 121,702.29 = 36,162.87 : x
  2. Step 2: Convert to fraction form
    81,125.51/121,702.29 = 36,162.87/x
  3. Step 3: Cross multiply
    81,125.51x = 121,702.29 × 36,162.87
  4. Step 4: Simplify right side
    81,125.51x = 4,401,104,091.97
  5. Step 5: Solve for x
    x = 4,401,104,091.97/81,125.51
  6. Step 6: Final answer
    x = 54,250.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.