Home / 208,115.38-287,199.22-112,622.07

Finding the Fourth Proportional to 208,115.38, 287,199.22 and 112,622.07

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Solution

The fourth proportional to 208,115.38, 287,199.22 and 112,622.07 is: 155,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,115.38 : 287,199.22 = 112,622.07 : x
  2. Step 2: Convert to fraction form
    208,115.38/287,199.22 = 112,622.07/x
  3. Step 3: Cross multiply
    208,115.38x = 287,199.22 × 112,622.07
  4. Step 4: Simplify right side
    208,115.38x = 32,344,970,658.79
  5. Step 5: Solve for x
    x = 32,344,970,658.79/208,115.38
  6. Step 6: Final answer
    x = 155,418.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.