Home / 98,661.22-136,156.17-56,218.66

Finding the Fourth Proportional to 98,661.22, 136,156.17 and 56,218.66

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Solution

The fourth proportional to 98,661.22, 136,156.17 and 56,218.66 is: 77,583.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,661.22 : 136,156.17 = 56,218.66 : x
  2. Step 2: Convert to fraction form
    98,661.22/136,156.17 = 56,218.66/x
  3. Step 3: Cross multiply
    98,661.22x = 136,156.17 × 56,218.66
  4. Step 4: Simplify right side
    98,661.22x = 7,654,517,428.13
  5. Step 5: Solve for x
    x = 7,654,517,428.13/98,661.22
  6. Step 6: Final answer
    x = 77,583.85

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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.