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Finding the Fourth Proportional to 160,808.12, 221,904.30 and 89,185.40

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Solution

The fourth proportional to 160,808.12, 221,904.30 and 89,185.40 is: 123,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,808.12 : 221,904.30 = 89,185.40 : x
  2. Step 2: Convert to fraction form
    160,808.12/221,904.30 = 89,185.40/x
  3. Step 3: Cross multiply
    160,808.12x = 221,904.30 × 89,185.40
  4. Step 4: Simplify right side
    160,808.12x = 19,790,623,757.22
  5. Step 5: Solve for x
    x = 19,790,623,757.22/160,808.12
  6. Step 6: Final answer
    x = 123,069.80

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1.5x scale

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.