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Finding the Fourth Proportional to 163,288.78, 245,008.50 and 74,569.48

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Solution

The fourth proportional to 163,288.78, 245,008.50 and 74,569.48 is: 111,888.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,288.78 : 245,008.50 = 74,569.48 : x
  2. Step 2: Convert to fraction form
    163,288.78/245,008.50 = 74,569.48/x
  3. Step 3: Cross multiply
    163,288.78x = 245,008.50 × 74,569.48
  4. Step 4: Simplify right side
    163,288.78x = 18,270,156,440.58
  5. Step 5: Solve for x
    x = 18,270,156,440.58/163,288.78
  6. Step 6: Final answer
    x = 111,888.62

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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.