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Finding the Fourth Proportional to 158,895.78, 219,277.98 and 87,277.48

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Solution

The fourth proportional to 158,895.78, 219,277.98 and 87,277.48 is: 120,443.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,895.78 : 219,277.98 = 87,277.48 : x
  2. Step 2: Convert to fraction form
    158,895.78/219,277.98 = 87,277.48/x
  3. Step 3: Cross multiply
    158,895.78x = 219,277.98 × 87,277.48
  4. Step 4: Simplify right side
    158,895.78x = 19,138,029,513.89
  5. Step 5: Solve for x
    x = 19,138,029,513.89/158,895.78
  6. Step 6: Final answer
    x = 120,443.91

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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.