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Finding the Fourth Proportional to 208,751.60, 288,077.15 and 118,105.71

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Solution

The fourth proportional to 208,751.60, 288,077.15 and 118,105.71 is: 162,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,751.60 : 288,077.15 = 118,105.71 : x
  2. Step 2: Convert to fraction form
    208,751.60/288,077.15 = 118,105.71/x
  3. Step 3: Cross multiply
    208,751.60x = 288,077.15 × 118,105.71
  4. Step 4: Simplify right side
    208,751.60x = 34,023,555,745.00
  5. Step 5: Solve for x
    x = 34,023,555,745.00/208,751.60
  6. Step 6: Final answer
    x = 162,985.85

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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.