Home / 107,852.70-161,811.45-76,748.70

Finding the Fourth Proportional to 107,852.70, 161,811.45 and 76,748.70

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Solution

The fourth proportional to 107,852.70, 161,811.45 and 76,748.70 is: 115,146.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,852.70 : 161,811.45 = 76,748.70 : x
  2. Step 2: Convert to fraction form
    107,852.70/161,811.45 = 76,748.70/x
  3. Step 3: Cross multiply
    107,852.70x = 161,811.45 × 76,748.70
  4. Step 4: Simplify right side
    107,852.70x = 12,418,818,432.62
  5. Step 5: Solve for x
    x = 12,418,818,432.62/107,852.70
  6. Step 6: Final answer
    x = 115,146.11

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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.