Home / 115,501.17-172,888.78-73,428.75

Finding the Fourth Proportional to 115,501.17, 172,888.78 and 73,428.75

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Solution

The fourth proportional to 115,501.17, 172,888.78 and 73,428.75 is: 109,912.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,501.17 : 172,888.78 = 73,428.75 : x
  2. Step 2: Convert to fraction form
    115,501.17/172,888.78 = 73,428.75/x
  3. Step 3: Cross multiply
    115,501.17x = 172,888.78 × 73,428.75
  4. Step 4: Simplify right side
    115,501.17x = 12,695,007,004.43
  5. Step 5: Solve for x
    x = 12,695,007,004.43/115,501.17
  6. Step 6: Final answer
    x = 109,912.37

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1.5x scale

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.