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Finding the Fourth Proportional to 109,754.73, 151,472.75 and 79,153.11

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Solution

The fourth proportional to 109,754.73, 151,472.75 and 79,153.11 is: 109,239.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,754.73 : 151,472.75 = 79,153.11 : x
  2. Step 2: Convert to fraction form
    109,754.73/151,472.75 = 79,153.11/x
  3. Step 3: Cross multiply
    109,754.73x = 151,472.75 × 79,153.11
  4. Step 4: Simplify right side
    109,754.73x = 11,989,539,242.75
  5. Step 5: Solve for x
    x = 11,989,539,242.75/109,754.73
  6. Step 6: Final answer
    x = 109,239.39

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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.