Home / 172,271.13-258,143.56-72,376.71

Finding the Fourth Proportional to 172,271.13, 258,143.56 and 72,376.71

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Solution

The fourth proportional to 172,271.13, 258,143.56 and 72,376.71 is: 108,454.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,271.13 : 258,143.56 = 72,376.71 : x
  2. Step 2: Convert to fraction form
    172,271.13/258,143.56 = 72,376.71/x
  3. Step 3: Cross multiply
    172,271.13x = 258,143.56 × 72,376.71
  4. Step 4: Simplify right side
    172,271.13x = 18,683,581,580.49
  5. Step 5: Solve for x
    x = 18,683,581,580.49/172,271.13
  6. Step 6: Final answer
    x = 108,454.51

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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.