Home / 112,778.70-155,632.88-61,791.02

Finding the Fourth Proportional to 112,778.70, 155,632.88 and 61,791.02

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Solution

The fourth proportional to 112,778.70, 155,632.88 and 61,791.02 is: 85,270.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,778.70 : 155,632.88 = 61,791.02 : x
  2. Step 2: Convert to fraction form
    112,778.70/155,632.88 = 61,791.02/x
  3. Step 3: Cross multiply
    112,778.70x = 155,632.88 × 61,791.02
  4. Step 4: Simplify right side
    112,778.70x = 9,616,714,400.74
  5. Step 5: Solve for x
    x = 9,616,714,400.74/112,778.70
  6. Step 6: Final answer
    x = 85,270.66

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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.