Home / 115,003.40-172,343.10-91,351.40

Finding the Fourth Proportional to 115,003.40, 172,343.10 and 91,351.40

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Solution

The fourth proportional to 115,003.40, 172,343.10 and 91,351.40 is: 136,898.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,003.40 : 172,343.10 = 91,351.40 : x
  2. Step 2: Convert to fraction form
    115,003.40/172,343.10 = 91,351.40/x
  3. Step 3: Cross multiply
    115,003.40x = 172,343.10 × 91,351.40
  4. Step 4: Simplify right side
    115,003.40x = 15,743,783,465.34
  5. Step 5: Solve for x
    x = 15,743,783,465.34/115,003.40
  6. Step 6: Final answer
    x = 136,898.42

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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.