Home / 109,346.20-164,019.30-72,021.40

Finding the Fourth Proportional to 109,346.20, 164,019.30 and 72,021.40

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Solution

The fourth proportional to 109,346.20, 164,019.30 and 72,021.40 is: 108,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,346.20 : 164,019.30 = 72,021.40 : x
  2. Step 2: Convert to fraction form
    109,346.20/164,019.30 = 72,021.40/x
  3. Step 3: Cross multiply
    109,346.20x = 164,019.30 × 72,021.40
  4. Step 4: Simplify right side
    109,346.20x = 11,812,899,613.02
  5. Step 5: Solve for x
    x = 11,812,899,613.02/109,346.20
  6. Step 6: Final answer
    x = 108,032.10

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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.