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Finding the Fourth Proportional to 163,542.61, 245,409.09 and 68,765.93

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Solution

The fourth proportional to 163,542.61, 245,409.09 and 68,765.93 is: 103,188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,542.61 : 245,409.09 = 68,765.93 : x
  2. Step 2: Convert to fraction form
    163,542.61/245,409.09 = 68,765.93/x
  3. Step 3: Cross multiply
    163,542.61x = 245,409.09 × 68,765.93
  4. Step 4: Simplify right side
    163,542.61x = 16,875,782,733.43
  5. Step 5: Solve for x
    x = 16,875,782,733.43/163,542.61
  6. Step 6: Final answer
    x = 103,188.91

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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.