Home / 156,921.70-235,382.55-51,715.30

Finding the Fourth Proportional to 156,921.70, 235,382.55 and 51,715.30

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Solution

The fourth proportional to 156,921.70, 235,382.55 and 51,715.30 is: 77,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,921.70 : 235,382.55 = 51,715.30 : x
  2. Step 2: Convert to fraction form
    156,921.70/235,382.55 = 51,715.30/x
  3. Step 3: Cross multiply
    156,921.70x = 235,382.55 × 51,715.30
  4. Step 4: Simplify right side
    156,921.70x = 12,172,879,188.02
  5. Step 5: Solve for x
    x = 12,172,879,188.02/156,921.70
  6. Step 6: Final answer
    x = 77,572.95

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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.