Home / 156,787.77-216,456.87-103,228.48

Finding the Fourth Proportional to 156,787.77, 216,456.87 and 103,228.48

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Solution

The fourth proportional to 156,787.77, 216,456.87 and 103,228.48 is: 142,514.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,787.77 : 216,456.87 = 103,228.48 : x
  2. Step 2: Convert to fraction form
    156,787.77/216,456.87 = 103,228.48/x
  3. Step 3: Cross multiply
    156,787.77x = 216,456.87 × 103,228.48
  4. Step 4: Simplify right side
    156,787.77x = 22,344,513,675.66
  5. Step 5: Solve for x
    x = 22,344,513,675.66/156,787.77
  6. Step 6: Final answer
    x = 142,514.39

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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.