Home / 118,512.12-163,655.85-76,144.47

Finding the Fourth Proportional to 118,512.12, 163,655.85 and 76,144.47

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Solution

The fourth proportional to 118,512.12, 163,655.85 and 76,144.47 is: 105,149.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,512.12 : 163,655.85 = 76,144.47 : x
  2. Step 2: Convert to fraction form
    118,512.12/163,655.85 = 76,144.47/x
  3. Step 3: Cross multiply
    118,512.12x = 163,655.85 × 76,144.47
  4. Step 4: Simplify right side
    118,512.12x = 12,461,487,960.65
  5. Step 5: Solve for x
    x = 12,461,487,960.65/118,512.12
  6. Step 6: Final answer
    x = 105,149.48

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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.