Home / 101,239.20-151,856.64-31,116.96

Finding the Fourth Proportional to 101,239.20, 151,856.64 and 31,116.96

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Solution

The fourth proportional to 101,239.20, 151,856.64 and 31,116.96 is: 46,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,239.20 : 151,856.64 = 31,116.96 : x
  2. Step 2: Convert to fraction form
    101,239.20/151,856.64 = 31,116.96/x
  3. Step 3: Cross multiply
    101,239.20x = 151,856.64 × 31,116.96
  4. Step 4: Simplify right side
    101,239.20x = 4,725,316,992.61
  5. Step 5: Solve for x
    x = 4,725,316,992.61/101,239.20
  6. Step 6: Final answer
    x = 46,674.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.