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Finding the Fourth Proportional to 113,186.25, 156,328.25 and 75,394.89

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Solution

The fourth proportional to 113,186.25, 156,328.25 and 75,394.89 is: 104,132.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,186.25 : 156,328.25 = 75,394.89 : x
  2. Step 2: Convert to fraction form
    113,186.25/156,328.25 = 75,394.89/x
  3. Step 3: Cross multiply
    113,186.25x = 156,328.25 × 75,394.89
  4. Step 4: Simplify right side
    113,186.25x = 11,786,350,835.67
  5. Step 5: Solve for x
    x = 11,786,350,835.67/113,186.25
  6. Step 6: Final answer
    x = 104,132.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.