Home / 111,856.08-154,382.60-71,586.96

Finding the Fourth Proportional to 111,856.08, 154,382.60 and 71,586.96

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Solution

The fourth proportional to 111,856.08, 154,382.60 and 71,586.96 is: 98,803.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,856.08 : 154,382.60 = 71,586.96 : x
  2. Step 2: Convert to fraction form
    111,856.08/154,382.60 = 71,586.96/x
  3. Step 3: Cross multiply
    111,856.08x = 154,382.60 × 71,586.96
  4. Step 4: Simplify right side
    111,856.08x = 11,051,781,010.90
  5. Step 5: Solve for x
    x = 11,051,781,010.90/111,856.08
  6. Step 6: Final answer
    x = 98,803.58

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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.