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Finding the Fourth Proportional to 109,873.72, 151,628.70 and 67,407.04

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Solution

The fourth proportional to 109,873.72, 151,628.70 and 67,407.04 is: 93,023.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,873.72 : 151,628.70 = 67,407.04 : x
  2. Step 2: Convert to fraction form
    109,873.72/151,628.70 = 67,407.04/x
  3. Step 3: Cross multiply
    109,873.72x = 151,628.70 × 67,407.04
  4. Step 4: Simplify right side
    109,873.72x = 10,220,841,846.05
  5. Step 5: Solve for x
    x = 10,220,841,846.05/109,873.72
  6. Step 6: Final answer
    x = 93,023.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.