Home / 156,000.32-215,280.48-84,380.32

Finding the Fourth Proportional to 156,000.32, 215,280.48 and 84,380.32

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Solution

The fourth proportional to 156,000.32, 215,280.48 and 84,380.32 is: 116,444.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,000.32 : 215,280.48 = 84,380.32 : x
  2. Step 2: Convert to fraction form
    156,000.32/215,280.48 = 84,380.32/x
  3. Step 3: Cross multiply
    156,000.32x = 215,280.48 × 84,380.32
  4. Step 4: Simplify right side
    156,000.32x = 18,165,435,792.15
  5. Step 5: Solve for x
    x = 18,165,435,792.15/156,000.32
  6. Step 6: Final answer
    x = 116,444.86

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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.