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Finding the Fourth Proportional to 124,197.60, 171,300.24 and 78,836.16

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Solution

The fourth proportional to 124,197.60, 171,300.24 and 78,836.16 is: 108,735.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,197.60 : 171,300.24 = 78,836.16 : x
  2. Step 2: Convert to fraction form
    124,197.60/171,300.24 = 78,836.16/x
  3. Step 3: Cross multiply
    124,197.60x = 171,300.24 × 78,836.16
  4. Step 4: Simplify right side
    124,197.60x = 13,504,653,128.68
  5. Step 5: Solve for x
    x = 13,504,653,128.68/124,197.60
  6. Step 6: Final answer
    x = 108,735.22

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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.