Home / 156,721.20-216,275.25-89,653.20

Finding the Fourth Proportional to 156,721.20, 216,275.25 and 89,653.20

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Solution

The fourth proportional to 156,721.20, 216,275.25 and 89,653.20 is: 123,721.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,721.20 : 216,275.25 = 89,653.20 : x
  2. Step 2: Convert to fraction form
    156,721.20/216,275.25 = 89,653.20/x
  3. Step 3: Cross multiply
    156,721.20x = 216,275.25 × 89,653.20
  4. Step 4: Simplify right side
    156,721.20x = 19,389,768,243.30
  5. Step 5: Solve for x
    x = 19,389,768,243.30/156,721.20
  6. Step 6: Final answer
    x = 123,721.41

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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.