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Finding the Fourth Proportional to 208,164.60, 287,190.30 and 136,584.36

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Solution

The fourth proportional to 208,164.60, 287,190.30 and 136,584.36 is: 188,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,164.60 : 287,190.30 = 136,584.36 : x
  2. Step 2: Convert to fraction form
    208,164.60/287,190.30 = 136,584.36/x
  3. Step 3: Cross multiply
    208,164.60x = 287,190.30 × 136,584.36
  4. Step 4: Simplify right side
    208,164.60x = 39,225,703,323.71
  5. Step 5: Solve for x
    x = 39,225,703,323.71/208,164.60
  6. Step 6: Final answer
    x = 188,435.99

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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.