Home / 81,296.14-121,931.71-22,136.38

Finding the Fourth Proportional to 81,296.14, 121,931.71 and 22,136.38

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Solution

The fourth proportional to 81,296.14, 121,931.71 and 22,136.38 is: 33,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,296.14 : 121,931.71 = 22,136.38 : x
  2. Step 2: Convert to fraction form
    81,296.14/121,931.71 = 22,136.38/x
  3. Step 3: Cross multiply
    81,296.14x = 121,931.71 × 22,136.38
  4. Step 4: Simplify right side
    81,296.14x = 2,699,126,666.61
  5. Step 5: Solve for x
    x = 2,699,126,666.61/81,296.14
  6. Step 6: Final answer
    x = 33,201.17

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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.