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Finding the Fourth Proportional to 112,124.31, 154,769.03 and 66,816.51

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Solution

The fourth proportional to 112,124.31, 154,769.03 and 66,816.51 is: 92,229.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,124.31 : 154,769.03 = 66,816.51 : x
  2. Step 2: Convert to fraction form
    112,124.31/154,769.03 = 66,816.51/x
  3. Step 3: Cross multiply
    112,124.31x = 154,769.03 × 66,816.51
  4. Step 4: Simplify right side
    112,124.31x = 10,341,126,440.69
  5. Step 5: Solve for x
    x = 10,341,126,440.69/112,124.31
  6. Step 6: Final answer
    x = 92,229.12

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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.