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Finding the Fourth Proportional to 107,611.92, 148,400.28 and 71,803.44

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Solution

The fourth proportional to 107,611.92, 148,400.28 and 71,803.44 is: 99,019.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,611.92 : 148,400.28 = 71,803.44 : x
  2. Step 2: Convert to fraction form
    107,611.92/148,400.28 = 71,803.44/x
  3. Step 3: Cross multiply
    107,611.92x = 148,400.28 × 71,803.44
  4. Step 4: Simplify right side
    107,611.92x = 10,655,650,600.96
  5. Step 5: Solve for x
    x = 10,655,650,600.96/107,611.92
  6. Step 6: Final answer
    x = 99,019.24

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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.