Home / 112,979.68-155,911.91-61,992.74

Finding the Fourth Proportional to 112,979.68, 155,911.91 and 61,992.74

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Solution

The fourth proportional to 112,979.68, 155,911.91 and 61,992.74 is: 85,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.68 : 155,911.91 = 61,992.74 : x
  2. Step 2: Convert to fraction form
    112,979.68/155,911.91 = 61,992.74/x
  3. Step 3: Cross multiply
    112,979.68x = 155,911.91 × 61,992.74
  4. Step 4: Simplify right side
    112,979.68x = 9,665,406,579.35
  5. Step 5: Solve for x
    x = 9,665,406,579.35/112,979.68
  6. Step 6: Final answer
    x = 85,549.96

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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.