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Finding the Fourth Proportional to 115,630.90, 159,597.30 and 75,274.37

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Solution

The fourth proportional to 115,630.90, 159,597.30 and 75,274.37 is: 103,895.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,630.90 : 159,597.30 = 75,274.37 : x
  2. Step 2: Convert to fraction form
    115,630.90/159,597.30 = 75,274.37/x
  3. Step 3: Cross multiply
    115,630.90x = 159,597.30 × 75,274.37
  4. Step 4: Simplify right side
    115,630.90x = 12,013,586,211.20
  5. Step 5: Solve for x
    x = 12,013,586,211.20/115,630.90
  6. Step 6: Final answer
    x = 103,895.98

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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.