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Finding the Fourth Proportional to 111,948.88, 154,326.25 and 85,044.68

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Solution

The fourth proportional to 111,948.88, 154,326.25 and 85,044.68 is: 117,237.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,948.88 : 154,326.25 = 85,044.68 : x
  2. Step 2: Convert to fraction form
    111,948.88/154,326.25 = 85,044.68/x
  3. Step 3: Cross multiply
    111,948.88x = 154,326.25 × 85,044.68
  4. Step 4: Simplify right side
    111,948.88x = 13,124,627,038.97
  5. Step 5: Solve for x
    x = 13,124,627,038.97/111,948.88
  6. Step 6: Final answer
    x = 117,237.68

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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.