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Finding the Fourth Proportional to 168,990.60, 253,485.90 and 153,438.60

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Solution

The fourth proportional to 168,990.60, 253,485.90 and 153,438.60 is: 230,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,990.60 : 253,485.90 = 153,438.60 : x
  2. Step 2: Convert to fraction form
    168,990.60/253,485.90 = 153,438.60/x
  3. Step 3: Cross multiply
    168,990.60x = 253,485.90 × 153,438.60
  4. Step 4: Simplify right side
    168,990.60x = 38,894,521,615.74
  5. Step 5: Solve for x
    x = 38,894,521,615.74/168,990.60
  6. Step 6: Final answer
    x = 230,157.90

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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.