Home / 107,799.12-161,695.20-28,909.20

Finding the Fourth Proportional to 107,799.12, 161,695.20 and 28,909.20

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Solution

The fourth proportional to 107,799.12, 161,695.20 and 28,909.20 is: 43,362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,799.12 : 161,695.20 = 28,909.20 : x
  2. Step 2: Convert to fraction form
    107,799.12/161,695.20 = 28,909.20/x
  3. Step 3: Cross multiply
    107,799.12x = 161,695.20 × 28,909.20
  4. Step 4: Simplify right side
    107,799.12x = 4,674,478,875.84
  5. Step 5: Solve for x
    x = 4,674,478,875.84/107,799.12
  6. Step 6: Final answer
    x = 43,362.87

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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.