Home / 172,060.53-258,126.72-86,719.35

Finding the Fourth Proportional to 172,060.53, 258,126.72 and 86,719.35

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Solution

The fourth proportional to 172,060.53, 258,126.72 and 86,719.35 is: 130,097.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,060.53 : 258,126.72 = 86,719.35 : x
  2. Step 2: Convert to fraction form
    172,060.53/258,126.72 = 86,719.35/x
  3. Step 3: Cross multiply
    172,060.53x = 258,126.72 × 86,719.35
  4. Step 4: Simplify right side
    172,060.53x = 22,384,581,376.03
  5. Step 5: Solve for x
    x = 22,384,581,376.03/172,060.53
  6. Step 6: Final answer
    x = 130,097.13

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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.