Home / 156,975.30-216,624.79-85,355.37

Finding the Fourth Proportional to 156,975.30, 216,624.79 and 85,355.37

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Solution

The fourth proportional to 156,975.30, 216,624.79 and 85,355.37 is: 117,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,975.30 : 216,624.79 = 85,355.37 : x
  2. Step 2: Convert to fraction form
    156,975.30/216,624.79 = 85,355.37/x
  3. Step 3: Cross multiply
    156,975.30x = 216,624.79 × 85,355.37
  4. Step 4: Simplify right side
    156,975.30x = 18,490,089,101.62
  5. Step 5: Solve for x
    x = 18,490,089,101.62/156,975.30
  6. Step 6: Final answer
    x = 117,789.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.