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Finding the Fourth Proportional to 112,438, 155,164.44 and 67,734.64

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Solution

The fourth proportional to 112,438, 155,164.44 and 67,734.64 is: 93,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,438 : 155,164.44 = 67,734.64 : x
  2. Step 2: Convert to fraction form
    112,438/155,164.44 = 67,734.64/x
  3. Step 3: Cross multiply
    112,438x = 155,164.44 × 67,734.64
  4. Step 4: Simplify right side
    112,438x = 10,510,007,484.20
  5. Step 5: Solve for x
    x = 10,510,007,484.20/112,438
  6. Step 6: Final answer
    x = 93,473.80

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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.