Home / 145,221.40-217,832.10-109,739.80

Finding the Fourth Proportional to 145,221.40, 217,832.10 and 109,739.80

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Solution

The fourth proportional to 145,221.40, 217,832.10 and 109,739.80 is: 164,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,221.40 : 217,832.10 = 109,739.80 : x
  2. Step 2: Convert to fraction form
    145,221.40/217,832.10 = 109,739.80/x
  3. Step 3: Cross multiply
    145,221.40x = 217,832.10 × 109,739.80
  4. Step 4: Simplify right side
    145,221.40x = 23,904,851,087.58
  5. Step 5: Solve for x
    x = 23,904,851,087.58/145,221.40
  6. Step 6: Final answer
    x = 164,609.70

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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.