Home / 261,930.38-392,683.66-81,923.19

Finding the Fourth Proportional to 261,930.38, 392,683.66 and 81,923.19

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Solution

The fourth proportional to 261,930.38, 392,683.66 and 81,923.19 is: 122,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,930.38 : 392,683.66 = 81,923.19 : x
  2. Step 2: Convert to fraction form
    261,930.38/392,683.66 = 81,923.19/x
  3. Step 3: Cross multiply
    261,930.38x = 392,683.66 × 81,923.19
  4. Step 4: Simplify right side
    261,930.38x = 32,169,898,088.08
  5. Step 5: Solve for x
    x = 32,169,898,088.08/261,930.38
  6. Step 6: Final answer
    x = 122,818.51

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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.