Home / 156,933.60-235,011.60-100,687.20

Finding the Fourth Proportional to 156,933.60, 235,011.60 and 100,687.20

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Solution

The fourth proportional to 156,933.60, 235,011.60 and 100,687.20 is: 150,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,933.60 : 235,011.60 = 100,687.20 : x
  2. Step 2: Convert to fraction form
    156,933.60/235,011.60 = 100,687.20/x
  3. Step 3: Cross multiply
    156,933.60x = 235,011.60 × 100,687.20
  4. Step 4: Simplify right side
    156,933.60x = 23,662,659,971.52
  5. Step 5: Solve for x
    x = 23,662,659,971.52/156,933.60
  6. Step 6: Final answer
    x = 150,781.35

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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.