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Finding the Fourth Proportional to 112,124.67, 154,769.54 and 66,816.86

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Solution

The fourth proportional to 112,124.67, 154,769.54 and 66,816.86 is: 92,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,124.67 : 154,769.54 = 66,816.86 : x
  2. Step 2: Convert to fraction form
    112,124.67/154,769.54 = 66,816.86/x
  3. Step 3: Cross multiply
    112,124.67x = 154,769.54 × 66,816.86
  4. Step 4: Simplify right side
    112,124.67x = 10,341,213,578.51
  5. Step 5: Solve for x
    x = 10,341,213,578.51/112,124.67
  6. Step 6: Final answer
    x = 92,229.60

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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.