Home / 112,449.38-168,029.49-85,646.48

Finding the Fourth Proportional to 112,449.38, 168,029.49 and 85,646.48

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Solution

The fourth proportional to 112,449.38, 168,029.49 and 85,646.48 is: 127,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,449.38 : 168,029.49 = 85,646.48 : x
  2. Step 2: Convert to fraction form
    112,449.38/168,029.49 = 85,646.48/x
  3. Step 3: Cross multiply
    112,449.38x = 168,029.49 × 85,646.48
  4. Step 4: Simplify right side
    112,449.38x = 14,391,133,835.72
  5. Step 5: Solve for x
    x = 14,391,133,835.72/112,449.38
  6. Step 6: Final answer
    x = 127,978.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.