Home / 156,975.15-216,619.78-85,352.70

Finding the Fourth Proportional to 156,975.15, 216,619.78 and 85,352.70

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Solution

The fourth proportional to 156,975.15, 216,619.78 and 85,352.70 is: 117,783.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,975.15 : 216,619.78 = 85,352.70 : x
  2. Step 2: Convert to fraction form
    156,975.15/216,619.78 = 85,352.70/x
  3. Step 3: Cross multiply
    156,975.15x = 216,619.78 × 85,352.70
  4. Step 4: Simplify right side
    156,975.15x = 18,489,083,096.41
  5. Step 5: Solve for x
    x = 18,489,083,096.41/156,975.15
  6. Step 6: Final answer
    x = 117,783.50

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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.