Home / 101,982.60-140,739.12-61,703.76

Finding the Fourth Proportional to 101,982.60, 140,739.12 and 61,703.76

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Solution

The fourth proportional to 101,982.60, 140,739.12 and 61,703.76 is: 85,153.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,982.60 : 140,739.12 = 61,703.76 : x
  2. Step 2: Convert to fraction form
    101,982.60/140,739.12 = 61,703.76/x
  3. Step 3: Cross multiply
    101,982.60x = 140,739.12 × 61,703.76
  4. Step 4: Simplify right side
    101,982.60x = 8,684,132,883.09
  5. Step 5: Solve for x
    x = 8,684,132,883.09/101,982.60
  6. Step 6: Final answer
    x = 85,153.08

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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.