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Finding the Fourth Proportional to 158,736, 219,055.68 and 88,080

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Solution

The fourth proportional to 158,736, 219,055.68 and 88,080 is: 121,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,736 : 219,055.68 = 88,080 : x
  2. Step 2: Convert to fraction form
    158,736/219,055.68 = 88,080/x
  3. Step 3: Cross multiply
    158,736x = 219,055.68 × 88,080
  4. Step 4: Simplify right side
    158,736x = 19,294,424,294.40
  5. Step 5: Solve for x
    x = 19,294,424,294.40/158,736
  6. Step 6: Final answer
    x = 121,550.40

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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.