Home / 112,781.27-155,638.15-61,795.94

Finding the Fourth Proportional to 112,781.27, 155,638.15 and 61,795.94

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Solution

The fourth proportional to 112,781.27, 155,638.15 and 61,795.94 is: 85,278.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,781.27 : 155,638.15 = 61,795.94 : x
  2. Step 2: Convert to fraction form
    112,781.27/155,638.15 = 61,795.94/x
  3. Step 3: Cross multiply
    112,781.27x = 155,638.15 × 61,795.94
  4. Step 4: Simplify right side
    112,781.27x = 9,617,804,846.43
  5. Step 5: Solve for x
    x = 9,617,804,846.43/112,781.27
  6. Step 6: Final answer
    x = 85,278.39

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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.