Home / 107,966.40-161,949.60-78,244.80

Finding the Fourth Proportional to 107,966.40, 161,949.60 and 78,244.80

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Solution

The fourth proportional to 107,966.40, 161,949.60 and 78,244.80 is: 117,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,966.40 : 161,949.60 = 78,244.80 : x
  2. Step 2: Convert to fraction form
    107,966.40/161,949.60 = 78,244.80/x
  3. Step 3: Cross multiply
    107,966.40x = 161,949.60 × 78,244.80
  4. Step 4: Simplify right side
    107,966.40x = 12,671,714,062.08
  5. Step 5: Solve for x
    x = 12,671,714,062.08/107,966.40
  6. Step 6: Final answer
    x = 117,367.20

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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.