Home / 121,431.96-182,209.91-81,906.19

Finding the Fourth Proportional to 121,431.96, 182,209.91 and 81,906.19

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Solution

The fourth proportional to 121,431.96, 182,209.91 and 81,906.19 is: 122,901.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,431.96 : 182,209.91 = 81,906.19 : x
  2. Step 2: Convert to fraction form
    121,431.96/182,209.91 = 81,906.19/x
  3. Step 3: Cross multiply
    121,431.96x = 182,209.91 × 81,906.19
  4. Step 4: Simplify right side
    121,431.96x = 14,924,118,643.29
  5. Step 5: Solve for x
    x = 14,924,118,643.29/121,431.96
  6. Step 6: Final answer
    x = 122,901.08

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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.