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Finding the Fourth Proportional to 156,743.60, 234,726.60 and 125,639.60

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Solution

The fourth proportional to 156,743.60, 234,726.60 and 125,639.60 is: 188,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,743.60 : 234,726.60 = 125,639.60 : x
  2. Step 2: Convert to fraction form
    156,743.60/234,726.60 = 125,639.60/x
  3. Step 3: Cross multiply
    156,743.60x = 234,726.60 × 125,639.60
  4. Step 4: Simplify right side
    156,743.60x = 29,490,956,133.36
  5. Step 5: Solve for x
    x = 29,490,956,133.36/156,743.60
  6. Step 6: Final answer
    x = 188,147.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.