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Finding the Fourth Proportional to 185,371.39, 277,890.63 and 85,480.57

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Solution

The fourth proportional to 185,371.39, 277,890.63 and 85,480.57 is: 128,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,371.39 : 277,890.63 = 85,480.57 : x
  2. Step 2: Convert to fraction form
    185,371.39/277,890.63 = 85,480.57/x
  3. Step 3: Cross multiply
    185,371.39x = 277,890.63 × 85,480.57
  4. Step 4: Simplify right side
    185,371.39x = 23,754,249,450.06
  5. Step 5: Solve for x
    x = 23,754,249,450.06/185,371.39
  6. Step 6: Final answer
    x = 128,144.10

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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.