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Finding the Fourth Proportional to 121,584.26, 167,803.90 and 87,705.02

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Solution

The fourth proportional to 121,584.26, 167,803.90 and 87,705.02 is: 121,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,584.26 : 167,803.90 = 87,705.02 : x
  2. Step 2: Convert to fraction form
    121,584.26/167,803.90 = 87,705.02/x
  3. Step 3: Cross multiply
    121,584.26x = 167,803.90 × 87,705.02
  4. Step 4: Simplify right side
    121,584.26x = 14,717,244,405.58
  5. Step 5: Solve for x
    x = 14,717,244,405.58/121,584.26
  6. Step 6: Final answer
    x = 121,045.64

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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.