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Finding the Fourth Proportional to 160,812.80, 221,918.64 and 88,216

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Solution

The fourth proportional to 160,812.80, 221,918.64 and 88,216 is: 121,736.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,812.80 : 221,918.64 = 88,216 : x
  2. Step 2: Convert to fraction form
    160,812.80/221,918.64 = 88,216/x
  3. Step 3: Cross multiply
    160,812.80x = 221,918.64 × 88,216
  4. Step 4: Simplify right side
    160,812.80x = 19,576,774,746.24
  5. Step 5: Solve for x
    x = 19,576,774,746.24/160,812.80
  6. Step 6: Final answer
    x = 121,736.42

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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.