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Finding the Fourth Proportional to 124,554.54, 171,912.87 and 79,223.70

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Solution

The fourth proportional to 124,554.54, 171,912.87 and 79,223.70 is: 109,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,554.54 : 171,912.87 = 79,223.70 : x
  2. Step 2: Convert to fraction form
    124,554.54/171,912.87 = 79,223.70/x
  3. Step 3: Cross multiply
    124,554.54x = 171,912.87 × 79,223.70
  4. Step 4: Simplify right side
    124,554.54x = 13,619,573,639.02
  5. Step 5: Solve for x
    x = 13,619,573,639.02/124,554.54
  6. Step 6: Final answer
    x = 109,346.26

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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.