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Finding the Fourth Proportional to 112,474.32, 155,209.20 and 61,489.68

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Solution

The fourth proportional to 112,474.32, 155,209.20 and 61,489.68 is: 84,852.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,474.32 : 155,209.20 = 61,489.68 : x
  2. Step 2: Convert to fraction form
    112,474.32/155,209.20 = 61,489.68/x
  3. Step 3: Cross multiply
    112,474.32x = 155,209.20 × 61,489.68
  4. Step 4: Simplify right side
    112,474.32x = 9,543,764,041.06
  5. Step 5: Solve for x
    x = 9,543,764,041.06/112,474.32
  6. Step 6: Final answer
    x = 84,852.83

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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.