Home / 101,979.24-140,731.08-56,657.04

Finding the Fourth Proportional to 101,979.24, 140,731.08 and 56,657.04

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Solution

The fourth proportional to 101,979.24, 140,731.08 and 56,657.04 is: 78,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,979.24 : 140,731.08 = 56,657.04 : x
  2. Step 2: Convert to fraction form
    101,979.24/140,731.08 = 56,657.04/x
  3. Step 3: Cross multiply
    101,979.24x = 140,731.08 × 56,657.04
  4. Step 4: Simplify right side
    101,979.24x = 7,973,406,428.80
  5. Step 5: Solve for x
    x = 7,973,406,428.80/101,979.24
  6. Step 6: Final answer
    x = 78,186.56

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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.