Home / 208,120.09-287,205.70-112,626.79

Finding the Fourth Proportional to 208,120.09, 287,205.70 and 112,626.79

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Solution

The fourth proportional to 208,120.09, 287,205.70 and 112,626.79 is: 155,424.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,120.09 : 287,205.70 = 112,626.79 : x
  2. Step 2: Convert to fraction form
    208,120.09/287,205.70 = 112,626.79/x
  3. Step 3: Cross multiply
    208,120.09x = 287,205.70 × 112,626.79
  4. Step 4: Simplify right side
    208,120.09x = 32,347,056,060.70
  5. Step 5: Solve for x
    x = 32,347,056,060.70/208,120.09
  6. Step 6: Final answer
    x = 155,424.96

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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.