Home / 156,872.36-235,115.76-72,518.42

Finding the Fourth Proportional to 156,872.36, 235,115.76 and 72,518.42

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Solution

The fourth proportional to 156,872.36, 235,115.76 and 72,518.42 is: 108,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,872.36 : 235,115.76 = 72,518.42 : x
  2. Step 2: Convert to fraction form
    156,872.36/235,115.76 = 72,518.42/x
  3. Step 3: Cross multiply
    156,872.36x = 235,115.76 × 72,518.42
  4. Step 4: Simplify right side
    156,872.36x = 17,050,223,432.30
  5. Step 5: Solve for x
    x = 17,050,223,432.30/156,872.36
  6. Step 6: Final answer
    x = 108,688.51

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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.