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Finding the Fourth Proportional to 208,618.34, 287,893.04 and 113,124.87

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Solution

The fourth proportional to 208,618.34, 287,893.04 and 113,124.87 is: 156,112.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,618.34 : 287,893.04 = 113,124.87 : x
  2. Step 2: Convert to fraction form
    208,618.34/287,893.04 = 113,124.87/x
  3. Step 3: Cross multiply
    208,618.34x = 287,893.04 × 113,124.87
  4. Step 4: Simplify right side
    208,618.34x = 32,567,862,158.28
  5. Step 5: Solve for x
    x = 32,567,862,158.28/208,618.34
  6. Step 6: Final answer
    x = 156,112.18

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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.