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Finding the Fourth Proportional to 158,886.57, 219,254.72 and 87,255.03

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Solution

The fourth proportional to 158,886.57, 219,254.72 and 87,255.03 is: 120,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,886.57 : 219,254.72 = 87,255.03 : x
  2. Step 2: Convert to fraction form
    158,886.57/219,254.72 = 87,255.03/x
  3. Step 3: Cross multiply
    158,886.57x = 219,254.72 × 87,255.03
  4. Step 4: Simplify right side
    158,886.57x = 19,131,076,734.97
  5. Step 5: Solve for x
    x = 19,131,076,734.97/158,886.57
  6. Step 6: Final answer
    x = 120,407.14

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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.