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Finding the Fourth Proportional to 171,035.40, 256,115.70 and 126,420.60

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Solution

The fourth proportional to 171,035.40, 256,115.70 and 126,420.60 is: 189,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,035.40 : 256,115.70 = 126,420.60 : x
  2. Step 2: Convert to fraction form
    171,035.40/256,115.70 = 126,420.60/x
  3. Step 3: Cross multiply
    171,035.40x = 256,115.70 × 126,420.60
  4. Step 4: Simplify right side
    171,035.40x = 32,378,300,463.42
  5. Step 5: Solve for x
    x = 32,378,300,463.42/171,035.40
  6. Step 6: Final answer
    x = 189,307.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.