Home / 208,120.32-287,089.11-131,615.82

Finding the Fourth Proportional to 208,120.32, 287,089.11 and 131,615.82

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Solution

The fourth proportional to 208,120.32, 287,089.11 and 131,615.82 is: 181,555.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,120.32 : 287,089.11 = 131,615.82 : x
  2. Step 2: Convert to fraction form
    208,120.32/287,089.11 = 131,615.82/x
  3. Step 3: Cross multiply
    208,120.32x = 287,089.11 × 131,615.82
  4. Step 4: Simplify right side
    208,120.32x = 37,785,468,625.72
  5. Step 5: Solve for x
    x = 37,785,468,625.72/208,120.32
  6. Step 6: Final answer
    x = 181,555.88

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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.