Home / 211,107.29-316,827.35-78,025.60

Finding the Fourth Proportional to 211,107.29, 316,827.35 and 78,025.60

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Solution

The fourth proportional to 211,107.29, 316,827.35 and 78,025.60 is: 117,099.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,107.29 : 316,827.35 = 78,025.60 : x
  2. Step 2: Convert to fraction form
    211,107.29/316,827.35 = 78,025.60/x
  3. Step 3: Cross multiply
    211,107.29x = 316,827.35 × 78,025.60
  4. Step 4: Simplify right side
    211,107.29x = 24,720,644,080.16
  5. Step 5: Solve for x
    x = 24,720,644,080.16/211,107.29
  6. Step 6: Final answer
    x = 117,099.91

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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.