Home / 156,836.48-216,431.23-85,217.02

Finding the Fourth Proportional to 156,836.48, 216,431.23 and 85,217.02

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Solution

The fourth proportional to 156,836.48, 216,431.23 and 85,217.02 is: 117,597.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,836.48 : 216,431.23 = 85,217.02 : x
  2. Step 2: Convert to fraction form
    156,836.48/216,431.23 = 85,217.02/x
  3. Step 3: Cross multiply
    156,836.48x = 216,431.23 × 85,217.02
  4. Step 4: Simplify right side
    156,836.48x = 18,443,623,701.41
  5. Step 5: Solve for x
    x = 18,443,623,701.41/156,836.48
  6. Step 6: Final answer
    x = 117,597.79

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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.