Home / 112,623.21-155,375.82-72,331.38

Finding the Fourth Proportional to 112,623.21, 155,375.82 and 72,331.38

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Solution

The fourth proportional to 112,623.21, 155,375.82 and 72,331.38 is: 99,788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,623.21 : 155,375.82 = 72,331.38 : x
  2. Step 2: Convert to fraction form
    112,623.21/155,375.82 = 72,331.38/x
  3. Step 3: Cross multiply
    112,623.21x = 155,375.82 × 72,331.38
  4. Step 4: Simplify right side
    112,623.21x = 11,238,547,479.23
  5. Step 5: Solve for x
    x = 11,238,547,479.23/112,623.21
  6. Step 6: Final answer
    x = 99,788.91

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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.