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Finding the Fourth Proportional to 121,774.55, 182,664.95 and 57,717.77

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Solution

The fourth proportional to 121,774.55, 182,664.95 and 57,717.77 is: 86,578.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,774.55 : 182,664.95 = 57,717.77 : x
  2. Step 2: Convert to fraction form
    121,774.55/182,664.95 = 57,717.77/x
  3. Step 3: Cross multiply
    121,774.55x = 182,664.95 × 57,717.77
  4. Step 4: Simplify right side
    121,774.55x = 10,543,012,369.25
  5. Step 5: Solve for x
    x = 10,543,012,369.25/121,774.55
  6. Step 6: Final answer
    x = 86,578.13

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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.