Home / 268,681.46-403,007.60-81,678.38

Finding the Fourth Proportional to 268,681.46, 403,007.60 and 81,678.38

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Solution

The fourth proportional to 268,681.46, 403,007.60 and 81,678.38 is: 122,513.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,681.46 : 403,007.60 = 81,678.38 : x
  2. Step 2: Convert to fraction form
    268,681.46/403,007.60 = 81,678.38/x
  3. Step 3: Cross multiply
    268,681.46x = 403,007.60 × 81,678.38
  4. Step 4: Simplify right side
    268,681.46x = 32,917,006,084.85
  5. Step 5: Solve for x
    x = 32,917,006,084.85/268,681.46
  6. Step 6: Final answer
    x = 122,513.13

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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.