Home / 156,618.20-235,056.90-72,507.80

Finding the Fourth Proportional to 156,618.20, 235,056.90 and 72,507.80

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Solution

The fourth proportional to 156,618.20, 235,056.90 and 72,507.80 is: 108,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,618.20 : 235,056.90 = 72,507.80 : x
  2. Step 2: Convert to fraction form
    156,618.20/235,056.90 = 72,507.80/x
  3. Step 3: Cross multiply
    156,618.20x = 235,056.90 × 72,507.80
  4. Step 4: Simplify right side
    156,618.20x = 17,043,458,693.82
  5. Step 5: Solve for x
    x = 17,043,458,693.82/156,618.20
  6. Step 6: Final answer
    x = 108,821.70

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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.