Home / 98,919.97-136,434.19-85,145.74

Finding the Fourth Proportional to 98,919.97, 136,434.19 and 85,145.74

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Solution

The fourth proportional to 98,919.97, 136,434.19 and 85,145.74 is: 117,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,919.97 : 136,434.19 = 85,145.74 : x
  2. Step 2: Convert to fraction form
    98,919.97/136,434.19 = 85,145.74/x
  3. Step 3: Cross multiply
    98,919.97x = 136,434.19 × 85,145.74
  4. Step 4: Simplify right side
    98,919.97x = 11,616,790,068.85
  5. Step 5: Solve for x
    x = 11,616,790,068.85/98,919.97
  6. Step 6: Final answer
    x = 117,436.25

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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.