Home / 98,108.48-135,348.29-61,745.45

Finding the Fourth Proportional to 98,108.48, 135,348.29 and 61,745.45

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Solution

The fourth proportional to 98,108.48, 135,348.29 and 61,745.45 is: 85,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,108.48 : 135,348.29 = 61,745.45 : x
  2. Step 2: Convert to fraction form
    98,108.48/135,348.29 = 61,745.45/x
  3. Step 3: Cross multiply
    98,108.48x = 135,348.29 × 61,745.45
  4. Step 4: Simplify right side
    98,108.48x = 8,357,141,072.78
  5. Step 5: Solve for x
    x = 8,357,141,072.78/98,108.48
  6. Step 6: Final answer
    x = 85,182.66

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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.