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Finding the Fourth Proportional to 239,886.09, 359,763.12 and 90,114.66

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Solution

The fourth proportional to 239,886.09, 359,763.12 and 90,114.66 is: 135,147.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,886.09 : 359,763.12 = 90,114.66 : x
  2. Step 2: Convert to fraction form
    239,886.09/359,763.12 = 90,114.66/x
  3. Step 3: Cross multiply
    239,886.09x = 359,763.12 × 90,114.66
  4. Step 4: Simplify right side
    239,886.09x = 32,419,931,239.34
  5. Step 5: Solve for x
    x = 32,419,931,239.34/239,886.09
  6. Step 6: Final answer
    x = 135,147.19

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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.