Home / 156,392.30-215,821.53-84,772.31

Finding the Fourth Proportional to 156,392.30, 215,821.53 and 84,772.31

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Solution

The fourth proportional to 156,392.30, 215,821.53 and 84,772.31 is: 116,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,392.30 : 215,821.53 = 84,772.31 : x
  2. Step 2: Convert to fraction form
    156,392.30/215,821.53 = 84,772.31/x
  3. Step 3: Cross multiply
    156,392.30x = 215,821.53 × 84,772.31
  4. Step 4: Simplify right side
    156,392.30x = 18,295,688,566.73
  5. Step 5: Solve for x
    x = 18,295,688,566.73/156,392.30
  6. Step 6: Final answer
    x = 116,985.86

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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.