Home / 109,345.20-164,082.60-72,012.30

Finding the Fourth Proportional to 109,345.20, 164,082.60 and 72,012.30

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Solution

The fourth proportional to 109,345.20, 164,082.60 and 72,012.30 is: 108,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,345.20 : 164,082.60 = 72,012.30 : x
  2. Step 2: Convert to fraction form
    109,345.20/164,082.60 = 72,012.30/x
  3. Step 3: Cross multiply
    109,345.20x = 164,082.60 × 72,012.30
  4. Step 4: Simplify right side
    109,345.20x = 11,815,965,415.98
  5. Step 5: Solve for x
    x = 11,815,965,415.98/109,345.20
  6. Step 6: Final answer
    x = 108,061.13

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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.