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Finding the Fourth Proportional to 188,654.40, 260,323.20 and 103,766.40

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Solution

The fourth proportional to 188,654.40, 260,323.20 and 103,766.40 is: 143,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,654.40 : 260,323.20 = 103,766.40 : x
  2. Step 2: Convert to fraction form
    188,654.40/260,323.20 = 103,766.40/x
  3. Step 3: Cross multiply
    188,654.40x = 260,323.20 × 103,766.40
  4. Step 4: Simplify right side
    188,654.40x = 27,012,801,300.48
  5. Step 5: Solve for x
    x = 27,012,801,300.48/188,654.40
  6. Step 6: Final answer
    x = 143,186.70

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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.