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Finding the Fourth Proportional to 161,971.01, 243,026.68 and 87,003.68

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Solution

The fourth proportional to 161,971.01, 243,026.68 and 87,003.68 is: 130,543.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,971.01 : 243,026.68 = 87,003.68 : x
  2. Step 2: Convert to fraction form
    161,971.01/243,026.68 = 87,003.68/x
  3. Step 3: Cross multiply
    161,971.01x = 243,026.68 × 87,003.68
  4. Step 4: Simplify right side
    161,971.01x = 21,144,215,888.24
  5. Step 5: Solve for x
    x = 21,144,215,888.24/161,971.01
  6. Step 6: Final answer
    x = 130,543.22

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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.