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Finding the Fourth Proportional to 161,421.30, 241,978.35 and 125,862.90

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Solution

The fourth proportional to 161,421.30, 241,978.35 and 125,862.90 is: 188,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,421.30 : 241,978.35 = 125,862.90 : x
  2. Step 2: Convert to fraction form
    161,421.30/241,978.35 = 125,862.90/x
  3. Step 3: Cross multiply
    161,421.30x = 241,978.35 × 125,862.90
  4. Step 4: Simplify right side
    161,421.30x = 30,456,096,868.22
  5. Step 5: Solve for x
    x = 30,456,096,868.22/161,421.30
  6. Step 6: Final answer
    x = 188,674.59

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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.