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Finding the Fourth Proportional to 161,987.22, 243,054.72 and 83,156.88

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Solution

The fourth proportional to 161,987.22, 243,054.72 and 83,156.88 is: 124,773.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,987.22 : 243,054.72 = 83,156.88 : x
  2. Step 2: Convert to fraction form
    161,987.22/243,054.72 = 83,156.88/x
  3. Step 3: Cross multiply
    161,987.22x = 243,054.72 × 83,156.88
  4. Step 4: Simplify right side
    161,987.22x = 20,211,672,184.47
  5. Step 5: Solve for x
    x = 20,211,672,184.47/161,987.22
  6. Step 6: Final answer
    x = 124,773.25

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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.