Home / 102,112.18-140,912.35-55,543.86

Finding the Fourth Proportional to 102,112.18, 140,912.35 and 55,543.86

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Solution

The fourth proportional to 102,112.18, 140,912.35 and 55,543.86 is: 76,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,112.18 : 140,912.35 = 55,543.86 : x
  2. Step 2: Convert to fraction form
    102,112.18/140,912.35 = 55,543.86/x
  3. Step 3: Cross multiply
    102,112.18x = 140,912.35 × 55,543.86
  4. Step 4: Simplify right side
    102,112.18x = 7,826,815,701.81
  5. Step 5: Solve for x
    x = 7,826,815,701.81/102,112.18
  6. Step 6: Final answer
    x = 76,649.19

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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.