Home / 115,040.41-172,330.88-91,388.00

Finding the Fourth Proportional to 115,040.41, 172,330.88 and 91,388.00

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Solution

The fourth proportional to 115,040.41, 172,330.88 and 91,388.00 is: 136,899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,040.41 : 172,330.88 = 91,388.00 : x
  2. Step 2: Convert to fraction form
    115,040.41/172,330.88 = 91,388.00/x
  3. Step 3: Cross multiply
    115,040.41x = 172,330.88 × 91,388.00
  4. Step 4: Simplify right side
    115,040.41x = 15,748,974,435.33
  5. Step 5: Solve for x
    x = 15,748,974,435.33/115,040.41
  6. Step 6: Final answer
    x = 136,899.50

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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.