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Finding the Fourth Proportional to 101,015.42, 151,575.06 and 77,474.20

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Solution

The fourth proportional to 101,015.42, 151,575.06 and 77,474.20 is: 116,251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,015.42 : 151,575.06 = 77,474.20 : x
  2. Step 2: Convert to fraction form
    101,015.42/151,575.06 = 77,474.20/x
  3. Step 3: Cross multiply
    101,015.42x = 151,575.06 × 77,474.20
  4. Step 4: Simplify right side
    101,015.42x = 11,743,156,513.45
  5. Step 5: Solve for x
    x = 11,743,156,513.45/101,015.42
  6. Step 6: Final answer
    x = 116,251.13

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1.5x scale

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.