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Finding the Fourth Proportional to 171,852.60, 257,487.30 and 142,109.40

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Solution

The fourth proportional to 171,852.60, 257,487.30 and 142,109.40 is: 212,922.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,852.60 : 257,487.30 = 142,109.40 : x
  2. Step 2: Convert to fraction form
    171,852.60/257,487.30 = 142,109.40/x
  3. Step 3: Cross multiply
    171,852.60x = 257,487.30 × 142,109.40
  4. Step 4: Simplify right side
    171,852.60x = 36,591,365,710.62
  5. Step 5: Solve for x
    x = 36,591,365,710.62/171,852.60
  6. Step 6: Final answer
    x = 212,922.97

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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.