Home / 98,696.23-136,040.83-77,147.90

Finding the Fourth Proportional to 98,696.23, 136,040.83 and 77,147.90

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Solution

The fourth proportional to 98,696.23, 136,040.83 and 77,147.90 is: 106,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,696.23 : 136,040.83 = 77,147.90 : x
  2. Step 2: Convert to fraction form
    98,696.23/136,040.83 = 77,147.90/x
  3. Step 3: Cross multiply
    98,696.23x = 136,040.83 × 77,147.90
  4. Step 4: Simplify right side
    98,696.23x = 10,495,264,419.79
  5. Step 5: Solve for x
    x = 10,495,264,419.79/98,696.23
  6. Step 6: Final answer
    x = 106,339.06

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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.