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Finding the Fourth Proportional to 156,980.58, 235,471.41 and 38,654.70

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Solution

The fourth proportional to 156,980.58, 235,471.41 and 38,654.70 is: 57,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980.58 : 235,471.41 = 38,654.70 : x
  2. Step 2: Convert to fraction form
    156,980.58/235,471.41 = 38,654.70/x
  3. Step 3: Cross multiply
    156,980.58x = 235,471.41 × 38,654.70
  4. Step 4: Simplify right side
    156,980.58x = 9,102,076,712.13
  5. Step 5: Solve for x
    x = 9,102,076,712.13/156,980.58
  6. Step 6: Final answer
    x = 57,982.18

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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.