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Finding the Fourth Proportional to 163,910.80, 245,963.40 and 107,911.45

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Solution

The fourth proportional to 163,910.80, 245,963.40 and 107,911.45 is: 161,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,910.80 : 245,963.40 = 107,911.45 : x
  2. Step 2: Convert to fraction form
    163,910.80/245,963.40 = 107,911.45/x
  3. Step 3: Cross multiply
    163,910.80x = 245,963.40 × 107,911.45
  4. Step 4: Simplify right side
    163,910.80x = 26,542,267,140.93
  5. Step 5: Solve for x
    x = 26,542,267,140.93/163,910.80
  6. Step 6: Final answer
    x = 161,931.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.