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Finding the Fourth Proportional to 156,940, 235,513.68 and 73,840.48

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Solution

The fourth proportional to 156,940, 235,513.68 and 73,840.48 is: 110,809.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,940 : 235,513.68 = 73,840.48 : x
  2. Step 2: Convert to fraction form
    156,940/235,513.68 = 73,840.48/x
  3. Step 3: Cross multiply
    156,940x = 235,513.68 × 73,840.48
  4. Step 4: Simplify right side
    156,940x = 17,390,443,177.77
  5. Step 5: Solve for x
    x = 17,390,443,177.77/156,940
  6. Step 6: Final answer
    x = 110,809.50

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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.