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Finding the Fourth Proportional to 156,563.72, 216,211.32 and 108,289.28

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Solution

The fourth proportional to 156,563.72, 216,211.32 and 108,289.28 is: 149,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,563.72 : 216,211.32 = 108,289.28 : x
  2. Step 2: Convert to fraction form
    156,563.72/216,211.32 = 108,289.28/x
  3. Step 3: Cross multiply
    156,563.72x = 216,211.32 × 108,289.28
  4. Step 4: Simplify right side
    156,563.72x = 23,413,368,170.65
  5. Step 5: Solve for x
    x = 23,413,368,170.65/156,563.72
  6. Step 6: Final answer
    x = 149,545.30

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1.5x scale

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.