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Finding the Fourth Proportional to 160,814.80, 221,921.40 and 88,218

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Solution

The fourth proportional to 160,814.80, 221,921.40 and 88,218 is: 121,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,814.80 : 221,921.40 = 88,218 : x
  2. Step 2: Convert to fraction form
    160,814.80/221,921.40 = 88,218/x
  3. Step 3: Cross multiply
    160,814.80x = 221,921.40 × 88,218
  4. Step 4: Simplify right side
    160,814.80x = 19,577,462,065.20
  5. Step 5: Solve for x
    x = 19,577,462,065.20/160,814.80
  6. Step 6: Final answer
    x = 121,739.18

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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.