Home / 211,760.18-317,445.30-91,741.70

Finding the Fourth Proportional to 211,760.18, 317,445.30 and 91,741.70

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Solution

The fourth proportional to 211,760.18, 317,445.30 and 91,741.70 is: 137,528.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,760.18 : 317,445.30 = 91,741.70 : x
  2. Step 2: Convert to fraction form
    211,760.18/317,445.30 = 91,741.70/x
  3. Step 3: Cross multiply
    211,760.18x = 317,445.30 × 91,741.70
  4. Step 4: Simplify right side
    211,760.18x = 29,122,971,479.01
  5. Step 5: Solve for x
    x = 29,122,971,479.01/211,760.18
  6. Step 6: Final answer
    x = 137,528.08

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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.