Home / 156,981.62-235,156.79-72,623.36

Finding the Fourth Proportional to 156,981.62, 235,156.79 and 72,623.36

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Solution

The fourth proportional to 156,981.62, 235,156.79 and 72,623.36 is: 108,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981.62 : 235,156.79 = 72,623.36 : x
  2. Step 2: Convert to fraction form
    156,981.62/235,156.79 = 72,623.36/x
  3. Step 3: Cross multiply
    156,981.62x = 235,156.79 × 72,623.36
  4. Step 4: Simplify right side
    156,981.62x = 17,077,876,216.61
  5. Step 5: Solve for x
    x = 17,077,876,216.61/156,981.62
  6. Step 6: Final answer
    x = 108,789.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.