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Finding the Fourth Proportional to 122,998.40, 169,715.25 and 69,271.91

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Solution

The fourth proportional to 122,998.40, 169,715.25 and 69,271.91 is: 95,582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,998.40 : 169,715.25 = 69,271.91 : x
  2. Step 2: Convert to fraction form
    122,998.40/169,715.25 = 69,271.91/x
  3. Step 3: Cross multiply
    122,998.40x = 169,715.25 × 69,271.91
  4. Step 4: Simplify right side
    122,998.40x = 11,756,499,947.92
  5. Step 5: Solve for x
    x = 11,756,499,947.92/122,998.40
  6. Step 6: Final answer
    x = 95,582.54

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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.