Home / 261,930.13-392,683.29-81,922.94

Finding the Fourth Proportional to 261,930.13, 392,683.29 and 81,922.94

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Solution

The fourth proportional to 261,930.13, 392,683.29 and 81,922.94 is: 122,818.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,930.13 : 392,683.29 = 81,922.94 : x
  2. Step 2: Convert to fraction form
    261,930.13/392,683.29 = 81,922.94/x
  3. Step 3: Cross multiply
    261,930.13x = 392,683.29 × 81,922.94
  4. Step 4: Simplify right side
    261,930.13x = 32,169,768,807.61
  5. Step 5: Solve for x
    x = 32,169,768,807.61/261,930.13
  6. Step 6: Final answer
    x = 122,818.13

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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.