Home / 156,000.06-215,279.27-84,379.89

Finding the Fourth Proportional to 156,000.06, 215,279.27 and 84,379.89

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Solution

The fourth proportional to 156,000.06, 215,279.27 and 84,379.89 is: 116,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,000.06 : 215,279.27 = 84,379.89 : x
  2. Step 2: Convert to fraction form
    156,000.06/215,279.27 = 84,379.89/x
  3. Step 3: Cross multiply
    156,000.06x = 215,279.27 × 84,379.89
  4. Step 4: Simplify right side
    156,000.06x = 18,165,241,823.70
  5. Step 5: Solve for x
    x = 18,165,241,823.70/156,000.06
  6. Step 6: Final answer
    x = 116,443.81

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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.