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Finding the Fourth Proportional to 172,628.52, 238,170.34 and 140,742.60

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Solution

The fourth proportional to 172,628.52, 238,170.34 and 140,742.60 is: 194,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,628.52 : 238,170.34 = 140,742.60 : x
  2. Step 2: Convert to fraction form
    172,628.52/238,170.34 = 140,742.60/x
  3. Step 3: Cross multiply
    172,628.52x = 238,170.34 × 140,742.60
  4. Step 4: Simplify right side
    172,628.52x = 33,520,712,894.48
  5. Step 5: Solve for x
    x = 33,520,712,894.48/172,628.52
  6. Step 6: Final answer
    x = 194,178.30

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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.