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Finding the Fourth Proportional to 160,389, 221,395.14 and 93,321

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Solution

The fourth proportional to 160,389, 221,395.14 and 93,321 is: 128,816.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,389 : 221,395.14 = 93,321 : x
  2. Step 2: Convert to fraction form
    160,389/221,395.14 = 93,321/x
  3. Step 3: Cross multiply
    160,389x = 221,395.14 × 93,321
  4. Step 4: Simplify right side
    160,389x = 20,660,815,859.94
  5. Step 5: Solve for x
    x = 20,660,815,859.94/160,389
  6. Step 6: Final answer
    x = 128,816.91

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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.