Home / 156,430.17-215,872.70-84,809.97

Finding the Fourth Proportional to 156,430.17, 215,872.70 and 84,809.97

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Solution

The fourth proportional to 156,430.17, 215,872.70 and 84,809.97 is: 117,037.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,430.17 : 215,872.70 = 84,809.97 : x
  2. Step 2: Convert to fraction form
    156,430.17/215,872.70 = 84,809.97/x
  3. Step 3: Cross multiply
    156,430.17x = 215,872.70 × 84,809.97
  4. Step 4: Simplify right side
    156,430.17x = 18,308,156,786.77
  5. Step 5: Solve for x
    x = 18,308,156,786.77/156,430.17
  6. Step 6: Final answer
    x = 117,037.25

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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.