Home / 211,255.40-316,914.96-91,345.16

Finding the Fourth Proportional to 211,255.40, 316,914.96 and 91,345.16

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Solution

The fourth proportional to 211,255.40, 316,914.96 and 91,345.16 is: 137,031.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,255.40 : 316,914.96 = 91,345.16 : x
  2. Step 2: Convert to fraction form
    211,255.40/316,914.96 = 91,345.16/x
  3. Step 3: Cross multiply
    211,255.40x = 316,914.96 × 91,345.16
  4. Step 4: Simplify right side
    211,255.40x = 28,948,647,727.59
  5. Step 5: Solve for x
    x = 28,948,647,727.59/211,255.40
  6. Step 6: Final answer
    x = 137,031.52

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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.