Home / 115,712.16-173,666.87-45,640.68

Finding the Fourth Proportional to 115,712.16, 173,666.87 and 45,640.68

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Solution

The fourth proportional to 115,712.16, 173,666.87 and 45,640.68 is: 68,499.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,712.16 : 173,666.87 = 45,640.68 : x
  2. Step 2: Convert to fraction form
    115,712.16/173,666.87 = 45,640.68/x
  3. Step 3: Cross multiply
    115,712.16x = 173,666.87 × 45,640.68
  4. Step 4: Simplify right side
    115,712.16x = 7,926,273,812.07
  5. Step 5: Solve for x
    x = 7,926,273,812.07/115,712.16
  6. Step 6: Final answer
    x = 68,499.92

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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.