Home / 156,101.78-215,421.09-84,481.76

Finding the Fourth Proportional to 156,101.78, 215,421.09 and 84,481.76

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Solution

The fourth proportional to 156,101.78, 215,421.09 and 84,481.76 is: 116,585.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,101.78 : 215,421.09 = 84,481.76 : x
  2. Step 2: Convert to fraction form
    156,101.78/215,421.09 = 84,481.76/x
  3. Step 3: Cross multiply
    156,101.78x = 215,421.09 × 84,481.76
  4. Step 4: Simplify right side
    156,101.78x = 18,199,152,824.32
  5. Step 5: Solve for x
    x = 18,199,152,824.32/156,101.78
  6. Step 6: Final answer
    x = 116,585.17

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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.