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Finding the Fourth Proportional to 121,582.26, 167,801.13 and 87,703.02

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Solution

The fourth proportional to 121,582.26, 167,801.13 and 87,703.02 is: 121,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,582.26 : 167,801.13 = 87,703.02 : x
  2. Step 2: Convert to fraction form
    121,582.26/167,801.13 = 87,703.02/x
  3. Step 3: Cross multiply
    121,582.26x = 167,801.13 × 87,703.02
  4. Step 4: Simplify right side
    121,582.26x = 14,716,665,860.41
  5. Step 5: Solve for x
    x = 14,716,665,860.41/121,582.26
  6. Step 6: Final answer
    x = 121,042.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.