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Finding the Fourth Proportional to 171,388.40, 236,442.65 and 103,366.67

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Solution

The fourth proportional to 171,388.40, 236,442.65 and 103,366.67 is: 142,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,388.40 : 236,442.65 = 103,366.67 : x
  2. Step 2: Convert to fraction form
    171,388.40/236,442.65 = 103,366.67/x
  3. Step 3: Cross multiply
    171,388.40x = 236,442.65 × 103,366.67
  4. Step 4: Simplify right side
    171,388.40x = 24,440,287,677.43
  5. Step 5: Solve for x
    x = 24,440,287,677.43/171,388.40
  6. Step 6: Final answer
    x = 142,601.77

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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.