Home / 156,725.89-216,316.17-103,015.90

Finding the Fourth Proportional to 156,725.89, 216,316.17 and 103,015.90

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Solution

The fourth proportional to 156,725.89, 216,316.17 and 103,015.90 is: 142,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,725.89 : 216,316.17 = 103,015.90 : x
  2. Step 2: Convert to fraction form
    156,725.89/216,316.17 = 103,015.90/x
  3. Step 3: Cross multiply
    156,725.89x = 216,316.17 × 103,015.90
  4. Step 4: Simplify right side
    156,725.89x = 22,284,005,207.50
  5. Step 5: Solve for x
    x = 22,284,005,207.50/156,725.89
  6. Step 6: Final answer
    x = 142,184.58

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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.