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Finding the Fourth Proportional to 100,889.91, 139,225.22 and 54,948.53

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Solution

The fourth proportional to 100,889.91, 139,225.22 and 54,948.53 is: 75,827.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,889.91 : 139,225.22 = 54,948.53 : x
  2. Step 2: Convert to fraction form
    100,889.91/139,225.22 = 54,948.53/x
  3. Step 3: Cross multiply
    100,889.91x = 139,225.22 × 54,948.53
  4. Step 4: Simplify right side
    100,889.91x = 7,650,221,177.93
  5. Step 5: Solve for x
    x = 7,650,221,177.93/100,889.91
  6. Step 6: Final answer
    x = 75,827.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.