Home / 107,788.97-161,766.45-86,780.40

Finding the Fourth Proportional to 107,788.97, 161,766.45 and 86,780.40

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Solution

The fourth proportional to 107,788.97, 161,766.45 and 86,780.40 is: 130,237.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,788.97 : 161,766.45 = 86,780.40 : x
  2. Step 2: Convert to fraction form
    107,788.97/161,766.45 = 86,780.40/x
  3. Step 3: Cross multiply
    107,788.97x = 161,766.45 × 86,780.40
  4. Step 4: Simplify right side
    107,788.97x = 14,038,157,237.58
  5. Step 5: Solve for x
    x = 14,038,157,237.58/107,788.97
  6. Step 6: Final answer
    x = 130,237.42

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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.