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Finding the Fourth Proportional to 110,931.30, 153,073.26 and 65,610.90

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Solution

The fourth proportional to 110,931.30, 153,073.26 and 65,610.90 is: 90,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,931.30 : 153,073.26 = 65,610.90 : x
  2. Step 2: Convert to fraction form
    110,931.30/153,073.26 = 65,610.90/x
  3. Step 3: Cross multiply
    110,931.30x = 153,073.26 × 65,610.90
  4. Step 4: Simplify right side
    110,931.30x = 10,043,274,354.53
  5. Step 5: Solve for x
    x = 10,043,274,354.53/110,931.30
  6. Step 6: Final answer
    x = 90,535.98

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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.