Home / 208,370.72-287,551.30-112,877.78

Finding the Fourth Proportional to 208,370.72, 287,551.30 and 112,877.78

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Solution

The fourth proportional to 208,370.72, 287,551.30 and 112,877.78 is: 155,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,370.72 : 287,551.30 = 112,877.78 : x
  2. Step 2: Convert to fraction form
    208,370.72/287,551.30 = 112,877.78/x
  3. Step 3: Cross multiply
    208,370.72x = 287,551.30 × 112,877.78
  4. Step 4: Simplify right side
    208,370.72x = 32,458,152,380.11
  5. Step 5: Solve for x
    x = 32,458,152,380.11/208,370.72
  6. Step 6: Final answer
    x = 155,771.18

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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.