Home / 112,298.91-154,971.42-61,311.20

Finding the Fourth Proportional to 112,298.91, 154,971.42 and 61,311.20

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Solution

The fourth proportional to 112,298.91, 154,971.42 and 61,311.20 is: 84,608.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,298.91 : 154,971.42 = 61,311.20 : x
  2. Step 2: Convert to fraction form
    112,298.91/154,971.42 = 61,311.20/x
  3. Step 3: Cross multiply
    112,298.91x = 154,971.42 × 61,311.20
  4. Step 4: Simplify right side
    112,298.91x = 9,501,482,951.05
  5. Step 5: Solve for x
    x = 9,501,482,951.05/112,298.91
  6. Step 6: Final answer
    x = 84,608.86

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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.