Home / 211,612.25-317,466.71-91,689.12

Finding the Fourth Proportional to 211,612.25, 317,466.71 and 91,689.12

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Solution

The fourth proportional to 211,612.25, 317,466.71 and 91,689.12 is: 137,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,612.25 : 317,466.71 = 91,689.12 : x
  2. Step 2: Convert to fraction form
    211,612.25/317,466.71 = 91,689.12/x
  3. Step 3: Cross multiply
    211,612.25x = 317,466.71 × 91,689.12
  4. Step 4: Simplify right side
    211,612.25x = 29,108,242,810.75
  5. Step 5: Solve for x
    x = 29,108,242,810.75/211,612.25
  6. Step 6: Final answer
    x = 137,554.62

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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.