Home / 156,731.67-235,037.34-76,720.28

Finding the Fourth Proportional to 156,731.67, 235,037.34 and 76,720.28

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Solution

The fourth proportional to 156,731.67, 235,037.34 and 76,720.28 is: 115,050.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,731.67 : 235,037.34 = 76,720.28 : x
  2. Step 2: Convert to fraction form
    156,731.67/235,037.34 = 76,720.28/x
  3. Step 3: Cross multiply
    156,731.67x = 235,037.34 × 76,720.28
  4. Step 4: Simplify right side
    156,731.67x = 18,032,129,360.07
  5. Step 5: Solve for x
    x = 18,032,129,360.07/156,731.67
  6. Step 6: Final answer
    x = 115,050.96

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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.