Home / 102,060.31-140,846.12-61,781.35

Finding the Fourth Proportional to 102,060.31, 140,846.12 and 61,781.35

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Solution

The fourth proportional to 102,060.31, 140,846.12 and 61,781.35 is: 85,260.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,060.31 : 140,846.12 = 61,781.35 : x
  2. Step 2: Convert to fraction form
    102,060.31/140,846.12 = 61,781.35/x
  3. Step 3: Cross multiply
    102,060.31x = 140,846.12 × 61,781.35
  4. Step 4: Simplify right side
    102,060.31x = 8,701,663,435.86
  5. Step 5: Solve for x
    x = 8,701,663,435.86/102,060.31
  6. Step 6: Final answer
    x = 85,260.01

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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.