Home / 112,575.72-155,286.80-74,335.62

Finding the Fourth Proportional to 112,575.72, 155,286.80 and 74,335.62

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Solution

The fourth proportional to 112,575.72, 155,286.80 and 74,335.62 is: 102,538.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,575.72 : 155,286.80 = 74,335.62 : x
  2. Step 2: Convert to fraction form
    112,575.72/155,286.80 = 74,335.62/x
  3. Step 3: Cross multiply
    112,575.72x = 155,286.80 × 74,335.62
  4. Step 4: Simplify right side
    112,575.72x = 11,543,340,555.82
  5. Step 5: Solve for x
    x = 11,543,340,555.82/112,575.72
  6. Step 6: Final answer
    x = 102,538.46

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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.