Home / 109,220.11-163,830-34,346.81

Finding the Fourth Proportional to 109,220.11, 163,830 and 34,346.81

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Solution

The fourth proportional to 109,220.11, 163,830 and 34,346.81 is: 51,520.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,220.11 : 163,830 = 34,346.81 : x
  2. Step 2: Convert to fraction form
    109,220.11/163,830 = 34,346.81/x
  3. Step 3: Cross multiply
    109,220.11x = 163,830 × 34,346.81
  4. Step 4: Simplify right side
    109,220.11x = 5,627,038,291.88
  5. Step 5: Solve for x
    x = 5,627,038,291.88/109,220.11
  6. Step 6: Final answer
    x = 51,520.17

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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.