Home / 83,172.29-125,319.59-68,705.15

Finding the Fourth Proportional to 83,172.29, 125,319.59 and 68,705.15

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Solution

The fourth proportional to 83,172.29, 125,319.59 and 68,705.15 is: 103,521.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,172.29 : 125,319.59 = 68,705.15 : x
  2. Step 2: Convert to fraction form
    83,172.29/125,319.59 = 68,705.15/x
  3. Step 3: Cross multiply
    83,172.29x = 125,319.59 × 68,705.15
  4. Step 4: Simplify right side
    83,172.29x = 8,610,100,258.76
  5. Step 5: Solve for x
    x = 8,610,100,258.76/83,172.29
  6. Step 6: Final answer
    x = 103,521.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.