Home / 115,795.08-172,719.06-105,164.64

Finding the Fourth Proportional to 115,795.08, 172,719.06 and 105,164.64

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Solution

The fourth proportional to 115,795.08, 172,719.06 and 105,164.64 is: 156,862.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,795.08 : 172,719.06 = 105,164.64 : x
  2. Step 2: Convert to fraction form
    115,795.08/172,719.06 = 105,164.64/x
  3. Step 3: Cross multiply
    115,795.08x = 172,719.06 × 105,164.64
  4. Step 4: Simplify right side
    115,795.08x = 18,163,937,766.04
  5. Step 5: Solve for x
    x = 18,163,937,766.04/115,795.08
  6. Step 6: Final answer
    x = 156,862.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.