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Finding the Fourth Proportional to 122,901.15, 169,619.73 and 69,196.65

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Solution

The fourth proportional to 122,901.15, 169,619.73 and 69,196.65 is: 95,500.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,901.15 : 169,619.73 = 69,196.65 : x
  2. Step 2: Convert to fraction form
    122,901.15/169,619.73 = 69,196.65/x
  3. Step 3: Cross multiply
    122,901.15x = 169,619.73 × 69,196.65
  4. Step 4: Simplify right side
    122,901.15x = 11,737,117,089.90
  5. Step 5: Solve for x
    x = 11,737,117,089.90/122,901.15
  6. Step 6: Final answer
    x = 95,500.47

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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.