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Finding the Fourth Proportional to 160,463.84, 221,443.55 and 87,869.79

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Solution

The fourth proportional to 160,463.84, 221,443.55 and 87,869.79 is: 121,262.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,463.84 : 221,443.55 = 87,869.79 : x
  2. Step 2: Convert to fraction form
    160,463.84/221,443.55 = 87,869.79/x
  3. Step 3: Cross multiply
    160,463.84x = 221,443.55 × 87,869.79
  4. Step 4: Simplify right side
    160,463.84x = 19,458,197,255.57
  5. Step 5: Solve for x
    x = 19,458,197,255.57/160,463.84
  6. Step 6: Final answer
    x = 121,262.20

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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.