Home / 133,088.13-199,632.20-77,645.25

Finding the Fourth Proportional to 133,088.13, 199,632.20 and 77,645.25

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Solution

The fourth proportional to 133,088.13, 199,632.20 and 77,645.25 is: 116,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,088.13 : 199,632.20 = 77,645.25 : x
  2. Step 2: Convert to fraction form
    133,088.13/199,632.20 = 77,645.25/x
  3. Step 3: Cross multiply
    133,088.13x = 199,632.20 × 77,645.25
  4. Step 4: Simplify right side
    133,088.13x = 15,500,491,688.82
  5. Step 5: Solve for x
    x = 15,500,491,688.82/133,088.13
  6. Step 6: Final answer
    x = 116,467.88

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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.