Home / 89,718.30-134,577.45-81,407.70

Finding the Fourth Proportional to 89,718.30, 134,577.45 and 81,407.70

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Solution

The fourth proportional to 89,718.30, 134,577.45 and 81,407.70 is: 122,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,718.30 : 134,577.45 = 81,407.70 : x
  2. Step 2: Convert to fraction form
    89,718.30/134,577.45 = 81,407.70/x
  3. Step 3: Cross multiply
    89,718.30x = 134,577.45 × 81,407.70
  4. Step 4: Simplify right side
    89,718.30x = 10,955,640,676.37
  5. Step 5: Solve for x
    x = 10,955,640,676.37/89,718.30
  6. Step 6: Final answer
    x = 122,111.55

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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.