Home / 91,153.13-136,723.86-34,215.80

Finding the Fourth Proportional to 91,153.13, 136,723.86 and 34,215.80

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Solution

The fourth proportional to 91,153.13, 136,723.86 and 34,215.80 is: 51,321.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,153.13 : 136,723.86 = 34,215.80 : x
  2. Step 2: Convert to fraction form
    91,153.13/136,723.86 = 34,215.80/x
  3. Step 3: Cross multiply
    91,153.13x = 136,723.86 × 34,215.80
  4. Step 4: Simplify right side
    91,153.13x = 4,678,115,565.37
  5. Step 5: Solve for x
    x = 4,678,115,565.37/91,153.13
  6. Step 6: Final answer
    x = 51,321.51

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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.