Home / 156,129.54-215,458.38-84,508.98

Finding the Fourth Proportional to 156,129.54, 215,458.38 and 84,508.98

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Solution

The fourth proportional to 156,129.54, 215,458.38 and 84,508.98 is: 116,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,129.54 : 215,458.38 = 84,508.98 : x
  2. Step 2: Convert to fraction form
    156,129.54/215,458.38 = 84,508.98/x
  3. Step 3: Cross multiply
    156,129.54x = 215,458.38 × 84,508.98
  4. Step 4: Simplify right side
    156,129.54x = 18,208,167,926.25
  5. Step 5: Solve for x
    x = 18,208,167,926.25/156,129.54
  6. Step 6: Final answer
    x = 116,622.18

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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.