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Finding the Fourth Proportional to 197,679.60, 272,864.43 and 120,155.01

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Solution

The fourth proportional to 197,679.60, 272,864.43 and 120,155.01 is: 165,854.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,679.60 : 272,864.43 = 120,155.01 : x
  2. Step 2: Convert to fraction form
    197,679.60/272,864.43 = 120,155.01/x
  3. Step 3: Cross multiply
    197,679.60x = 272,864.43 × 120,155.01
  4. Step 4: Simplify right side
    197,679.60x = 32,786,028,315.29
  5. Step 5: Solve for x
    x = 32,786,028,315.29/197,679.60
  6. Step 6: Final answer
    x = 165,854.38

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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.