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Finding the Fourth Proportional to 120,455.99, 166,224.81 and 69,470.85

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Solution

The fourth proportional to 120,455.99, 166,224.81 and 69,470.85 is: 95,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,455.99 : 166,224.81 = 69,470.85 : x
  2. Step 2: Convert to fraction form
    120,455.99/166,224.81 = 69,470.85/x
  3. Step 3: Cross multiply
    120,455.99x = 166,224.81 × 69,470.85
  4. Step 4: Simplify right side
    120,455.99x = 11,547,778,841.79
  5. Step 5: Solve for x
    x = 11,547,778,841.79/120,455.99
  6. Step 6: Final answer
    x = 95,867.20

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1.5x scale

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.