Home / 121,434.96-182,214.42-81,909.18

Finding the Fourth Proportional to 121,434.96, 182,214.42 and 81,909.18

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Solution

The fourth proportional to 121,434.96, 182,214.42 and 81,909.18 is: 122,905.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,434.96 : 182,214.42 = 81,909.18 : x
  2. Step 2: Convert to fraction form
    121,434.96/182,214.42 = 81,909.18/x
  3. Step 3: Cross multiply
    121,434.96x = 182,214.42 × 81,909.18
  4. Step 4: Simplify right side
    121,434.96x = 14,925,033,726.38
  5. Step 5: Solve for x
    x = 14,925,033,726.38/121,434.96
  6. Step 6: Final answer
    x = 122,905.58

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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.