Home / 101,947.53-140,638.77-71,749.61

Finding the Fourth Proportional to 101,947.53, 140,638.77 and 71,749.61

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Solution

The fourth proportional to 101,947.53, 140,638.77 and 71,749.61 is: 98,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,947.53 : 140,638.77 = 71,749.61 : x
  2. Step 2: Convert to fraction form
    101,947.53/140,638.77 = 71,749.61/x
  3. Step 3: Cross multiply
    101,947.53x = 140,638.77 × 71,749.61
  4. Step 4: Simplify right side
    101,947.53x = 10,090,776,195.19
  5. Step 5: Solve for x
    x = 10,090,776,195.19/101,947.53
  6. Step 6: Final answer
    x = 98,980.09

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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.