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Finding the Fourth Proportional to 122,816.40, 169,484.04 and 69,100.80

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Solution

The fourth proportional to 122,816.40, 169,484.04 and 69,100.80 is: 95,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,816.40 : 169,484.04 = 69,100.80 : x
  2. Step 2: Convert to fraction form
    122,816.40/169,484.04 = 69,100.80/x
  3. Step 3: Cross multiply
    122,816.40x = 169,484.04 × 69,100.80
  4. Step 4: Simplify right side
    122,816.40x = 11,711,482,751.23
  5. Step 5: Solve for x
    x = 11,711,482,751.23/122,816.40
  6. Step 6: Final answer
    x = 95,357.65

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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.