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Finding the Fourth Proportional to 160,808.80, 221,913.12 and 88,212

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Solution

The fourth proportional to 160,808.80, 221,913.12 and 88,212 is: 121,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,808.80 : 221,913.12 = 88,212 : x
  2. Step 2: Convert to fraction form
    160,808.80/221,913.12 = 88,212/x
  3. Step 3: Cross multiply
    160,808.80x = 221,913.12 × 88,212
  4. Step 4: Simplify right side
    160,808.80x = 19,575,400,141.44
  5. Step 5: Solve for x
    x = 19,575,400,141.44/160,808.80
  6. Step 6: Final answer
    x = 121,730.90

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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.