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Finding the Fourth Proportional to 171,675.60, 257,590.20 and 78,133.20

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Solution

The fourth proportional to 171,675.60, 257,590.20 and 78,133.20 is: 117,234.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,675.60 : 257,590.20 = 78,133.20 : x
  2. Step 2: Convert to fraction form
    171,675.60/257,590.20 = 78,133.20/x
  3. Step 3: Cross multiply
    171,675.60x = 257,590.20 × 78,133.20
  4. Step 4: Simplify right side
    171,675.60x = 20,126,346,614.64
  5. Step 5: Solve for x
    x = 20,126,346,614.64/171,675.60
  6. Step 6: Final answer
    x = 117,234.75

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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.