Home / 121,412.60-182,226.90-71,430.20

Finding the Fourth Proportional to 121,412.60, 182,226.90 and 71,430.20

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Solution

The fourth proportional to 121,412.60, 182,226.90 and 71,430.20 is: 107,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,412.60 : 182,226.90 = 71,430.20 : x
  2. Step 2: Convert to fraction form
    121,412.60/182,226.90 = 71,430.20/x
  3. Step 3: Cross multiply
    121,412.60x = 182,226.90 × 71,430.20
  4. Step 4: Simplify right side
    121,412.60x = 13,016,503,912.38
  5. Step 5: Solve for x
    x = 13,016,503,912.38/121,412.60
  6. Step 6: Final answer
    x = 107,208.84

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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.