Home / 107,842.20-161,763.30-99,547.80

Finding the Fourth Proportional to 107,842.20, 161,763.30 and 99,547.80

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Solution

The fourth proportional to 107,842.20, 161,763.30 and 99,547.80 is: 149,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,842.20 : 161,763.30 = 99,547.80 : x
  2. Step 2: Convert to fraction form
    107,842.20/161,763.30 = 99,547.80/x
  3. Step 3: Cross multiply
    107,842.20x = 161,763.30 × 99,547.80
  4. Step 4: Simplify right side
    107,842.20x = 16,103,180,635.74
  5. Step 5: Solve for x
    x = 16,103,180,635.74/107,842.20
  6. Step 6: Final answer
    x = 149,321.70

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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.