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Finding the Fourth Proportional to 161,203.70, 241,805.55 and 86,554.10

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Solution

The fourth proportional to 161,203.70, 241,805.55 and 86,554.10 is: 129,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,203.70 : 241,805.55 = 86,554.10 : x
  2. Step 2: Convert to fraction form
    161,203.70/241,805.55 = 86,554.10/x
  3. Step 3: Cross multiply
    161,203.70x = 241,805.55 × 86,554.10
  4. Step 4: Simplify right side
    161,203.70x = 20,929,261,755.26
  5. Step 5: Solve for x
    x = 20,929,261,755.26/161,203.70
  6. Step 6: Final answer
    x = 129,831.15

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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.