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Finding the Fourth Proportional to 160,857.15, 221,983.13 and 89,237.17

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Solution

The fourth proportional to 160,857.15, 221,983.13 and 89,237.17 is: 123,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,857.15 : 221,983.13 = 89,237.17 : x
  2. Step 2: Convert to fraction form
    160,857.15/221,983.13 = 89,237.17/x
  3. Step 3: Cross multiply
    160,857.15x = 221,983.13 × 89,237.17
  4. Step 4: Simplify right side
    160,857.15x = 19,809,145,862.76
  5. Step 5: Solve for x
    x = 19,809,145,862.76/160,857.15
  6. Step 6: Final answer
    x = 123,147.44

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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.