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Finding the Fourth Proportional to 188,630.16, 260,308.26 and 103,745.40

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Solution

The fourth proportional to 188,630.16, 260,308.26 and 103,745.40 is: 143,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,630.16 : 260,308.26 = 103,745.40 : x
  2. Step 2: Convert to fraction form
    188,630.16/260,308.26 = 103,745.40/x
  3. Step 3: Cross multiply
    188,630.16x = 260,308.26 × 103,745.40
  4. Step 4: Simplify right side
    188,630.16x = 27,005,784,557.00
  5. Step 5: Solve for x
    x = 27,005,784,557.00/188,630.16
  6. Step 6: Final answer
    x = 143,167.90

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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.