Home / 98,728.63-136,267.42-68,144.65

Finding the Fourth Proportional to 98,728.63, 136,267.42 and 68,144.65

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Solution

The fourth proportional to 98,728.63, 136,267.42 and 68,144.65 is: 94,054.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,728.63 : 136,267.42 = 68,144.65 : x
  2. Step 2: Convert to fraction form
    98,728.63/136,267.42 = 68,144.65/x
  3. Step 3: Cross multiply
    98,728.63x = 136,267.42 × 68,144.65
  4. Step 4: Simplify right side
    98,728.63x = 9,285,894,960.97
  5. Step 5: Solve for x
    x = 9,285,894,960.97/98,728.63
  6. Step 6: Final answer
    x = 94,054.74

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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.