Home / 156,209.70-215,569.50-84,589.77

Finding the Fourth Proportional to 156,209.70, 215,569.50 and 84,589.77

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Solution

The fourth proportional to 156,209.70, 215,569.50 and 84,589.77 is: 116,733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,209.70 : 215,569.50 = 84,589.77 : x
  2. Step 2: Convert to fraction form
    156,209.70/215,569.50 = 84,589.77/x
  3. Step 3: Cross multiply
    156,209.70x = 215,569.50 × 84,589.77
  4. Step 4: Simplify right side
    156,209.70x = 18,234,974,915.19
  5. Step 5: Solve for x
    x = 18,234,974,915.19/156,209.70
  6. Step 6: Final answer
    x = 116,733.95

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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.