Home / 107,862.20-161,793.30-70,537.40

Finding the Fourth Proportional to 107,862.20, 161,793.30 and 70,537.40

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Solution

The fourth proportional to 107,862.20, 161,793.30 and 70,537.40 is: 105,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,862.20 : 161,793.30 = 70,537.40 : x
  2. Step 2: Convert to fraction form
    107,862.20/161,793.30 = 70,537.40/x
  3. Step 3: Cross multiply
    107,862.20x = 161,793.30 × 70,537.40
  4. Step 4: Simplify right side
    107,862.20x = 11,412,478,719.42
  5. Step 5: Solve for x
    x = 11,412,478,719.42/107,862.20
  6. Step 6: Final answer
    x = 105,806.10

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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.