Home / 102,116.70-140,764.86-71,819.46

Finding the Fourth Proportional to 102,116.70, 140,764.86 and 71,819.46

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Solution

The fourth proportional to 102,116.70, 140,764.86 and 71,819.46 is: 99,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,116.70 : 140,764.86 = 71,819.46 : x
  2. Step 2: Convert to fraction form
    102,116.70/140,764.86 = 71,819.46/x
  3. Step 3: Cross multiply
    102,116.70x = 140,764.86 × 71,819.46
  4. Step 4: Simplify right side
    102,116.70x = 10,109,656,232.18
  5. Step 5: Solve for x
    x = 10,109,656,232.18/102,116.70
  6. Step 6: Final answer
    x = 99,001.01

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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.