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Finding the Fourth Proportional to 208,118.54, 287,203.55 and 112,625.24

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Solution

The fourth proportional to 208,118.54, 287,203.55 and 112,625.24 is: 155,422.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,118.54 : 287,203.55 = 112,625.24 : x
  2. Step 2: Convert to fraction form
    208,118.54/287,203.55 = 112,625.24/x
  3. Step 3: Cross multiply
    208,118.54x = 287,203.55 × 112,625.24
  4. Step 4: Simplify right side
    208,118.54x = 32,346,366,748.46
  5. Step 5: Solve for x
    x = 32,346,366,748.46/208,118.54
  6. Step 6: Final answer
    x = 155,422.81

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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.