Home / 156,886.20-235,458.90-72,775.80

Finding the Fourth Proportional to 156,886.20, 235,458.90 and 72,775.80

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Solution

The fourth proportional to 156,886.20, 235,458.90 and 72,775.80 is: 109,223.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,886.20 : 235,458.90 = 72,775.80 : x
  2. Step 2: Convert to fraction form
    156,886.20/235,458.90 = 72,775.80/x
  3. Step 3: Cross multiply
    156,886.20x = 235,458.90 × 72,775.80
  4. Step 4: Simplify right side
    156,886.20x = 17,135,709,814.62
  5. Step 5: Solve for x
    x = 17,135,709,814.62/156,886.20
  6. Step 6: Final answer
    x = 109,223.82

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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.