Home / 91,186.12-136,498.91-77,734.02

Finding the Fourth Proportional to 91,186.12, 136,498.91 and 77,734.02

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Solution

The fourth proportional to 91,186.12, 136,498.91 and 77,734.02 is: 116,362.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,186.12 : 136,498.91 = 77,734.02 : x
  2. Step 2: Convert to fraction form
    91,186.12/136,498.91 = 77,734.02/x
  3. Step 3: Cross multiply
    91,186.12x = 136,498.91 × 77,734.02
  4. Step 4: Simplify right side
    91,186.12x = 10,610,608,611.25
  5. Step 5: Solve for x
    x = 10,610,608,611.25/91,186.12
  6. Step 6: Final answer
    x = 116,362.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.