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Finding the Fourth Proportional to 112,323.94, 154,969.72 and 74,102.48

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Solution

The fourth proportional to 112,323.94, 154,969.72 and 74,102.48 is: 102,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,323.94 : 154,969.72 = 74,102.48 : x
  2. Step 2: Convert to fraction form
    112,323.94/154,969.72 = 74,102.48/x
  3. Step 3: Cross multiply
    112,323.94x = 154,969.72 × 74,102.48
  4. Step 4: Simplify right side
    112,323.94x = 11,483,640,576.91
  5. Step 5: Solve for x
    x = 11,483,640,576.91/112,323.94
  6. Step 6: Final answer
    x = 102,236.80

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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.