Home / 109,569.20-164,418.60-72,237.20

Finding the Fourth Proportional to 109,569.20, 164,418.60 and 72,237.20

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Solution

The fourth proportional to 109,569.20, 164,418.60 and 72,237.20 is: 108,398.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,569.20 : 164,418.60 = 72,237.20 : x
  2. Step 2: Convert to fraction form
    109,569.20/164,418.60 = 72,237.20/x
  3. Step 3: Cross multiply
    109,569.20x = 164,418.60 × 72,237.20
  4. Step 4: Simplify right side
    109,569.20x = 11,877,139,291.92
  5. Step 5: Solve for x
    x = 11,877,139,291.92/109,569.20
  6. Step 6: Final answer
    x = 108,398.52

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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.