Home / 156,918.70-235,378.05-51,712.30

Finding the Fourth Proportional to 156,918.70, 235,378.05 and 51,712.30

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Solution

The fourth proportional to 156,918.70, 235,378.05 and 51,712.30 is: 77,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,918.70 : 235,378.05 = 51,712.30 : x
  2. Step 2: Convert to fraction form
    156,918.70/235,378.05 = 51,712.30/x
  3. Step 3: Cross multiply
    156,918.70x = 235,378.05 × 51,712.30
  4. Step 4: Simplify right side
    156,918.70x = 12,171,940,335.02
  5. Step 5: Solve for x
    x = 12,171,940,335.02/156,918.70
  6. Step 6: Final answer
    x = 77,568.45

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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.