Home / 98,691.16-136,206.78-56,239.96

Finding the Fourth Proportional to 98,691.16, 136,206.78 and 56,239.96

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Solution

The fourth proportional to 98,691.16, 136,206.78 and 56,239.96 is: 77,618.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,691.16 : 136,206.78 = 56,239.96 : x
  2. Step 2: Convert to fraction form
    98,691.16/136,206.78 = 56,239.96/x
  3. Step 3: Cross multiply
    98,691.16x = 136,206.78 × 56,239.96
  4. Step 4: Simplify right side
    98,691.16x = 7,660,263,858.93
  5. Step 5: Solve for x
    x = 7,660,263,858.93/98,691.16
  6. Step 6: Final answer
    x = 77,618.54

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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.