Home / 98,942.76-136,420.74-68,753.16

Finding the Fourth Proportional to 98,942.76, 136,420.74 and 68,753.16

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Solution

The fourth proportional to 98,942.76, 136,420.74 and 68,753.16 is: 94,795.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,942.76 : 136,420.74 = 68,753.16 : x
  2. Step 2: Convert to fraction form
    98,942.76/136,420.74 = 68,753.16/x
  3. Step 3: Cross multiply
    98,942.76x = 136,420.74 × 68,753.16
  4. Step 4: Simplify right side
    98,942.76x = 9,379,356,964.54
  5. Step 5: Solve for x
    x = 9,379,356,964.54/98,942.76
  6. Step 6: Final answer
    x = 94,795.79

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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.