Home / 91,219.50-136,716.93-64,781.10

Finding the Fourth Proportional to 91,219.50, 136,716.93 and 64,781.10

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Solution

The fourth proportional to 91,219.50, 136,716.93 and 64,781.10 is: 97,091.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,219.50 : 136,716.93 = 64,781.10 : x
  2. Step 2: Convert to fraction form
    91,219.50/136,716.93 = 64,781.10/x
  3. Step 3: Cross multiply
    91,219.50x = 136,716.93 × 64,781.10
  4. Step 4: Simplify right side
    91,219.50x = 8,856,673,114.02
  5. Step 5: Solve for x
    x = 8,856,673,114.02/91,219.50
  6. Step 6: Final answer
    x = 97,091.88

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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.