Home / 109,197.89-163,680.18-77,938.37

Finding the Fourth Proportional to 109,197.89, 163,680.18 and 77,938.37

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Solution

The fourth proportional to 109,197.89, 163,680.18 and 77,938.37 is: 116,824.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,197.89 : 163,680.18 = 77,938.37 : x
  2. Step 2: Convert to fraction form
    109,197.89/163,680.18 = 77,938.37/x
  3. Step 3: Cross multiply
    109,197.89x = 163,680.18 × 77,938.37
  4. Step 4: Simplify right side
    109,197.89x = 12,756,965,612.11
  5. Step 5: Solve for x
    x = 12,756,965,612.11/109,197.89
  6. Step 6: Final answer
    x = 116,824.29

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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.