Home / 156,968.31-216,618.98-85,348.82

Finding the Fourth Proportional to 156,968.31, 216,618.98 and 85,348.82

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Solution

The fourth proportional to 156,968.31, 216,618.98 and 85,348.82 is: 117,782.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,968.31 : 216,618.98 = 85,348.82 : x
  2. Step 2: Convert to fraction form
    156,968.31/216,618.98 = 85,348.82/x
  3. Step 3: Cross multiply
    156,968.31x = 216,618.98 × 85,348.82
  4. Step 4: Simplify right side
    156,968.31x = 18,488,172,822.76
  5. Step 5: Solve for x
    x = 18,488,172,822.76/156,968.31
  6. Step 6: Final answer
    x = 117,782.84

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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.