Home / 156,890.45-216,508.86-85,270.49

Finding the Fourth Proportional to 156,890.45, 216,508.86 and 85,270.49

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Solution

The fourth proportional to 156,890.45, 216,508.86 and 85,270.49 is: 117,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,890.45 : 216,508.86 = 85,270.49 : x
  2. Step 2: Convert to fraction form
    156,890.45/216,508.86 = 85,270.49/x
  3. Step 3: Cross multiply
    156,890.45x = 216,508.86 × 85,270.49
  4. Step 4: Simplify right side
    156,890.45x = 18,461,816,581.54
  5. Step 5: Solve for x
    x = 18,461,816,581.54/156,890.45
  6. Step 6: Final answer
    x = 117,673.30

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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.