Home / 156,911.86-216,542.58-85,296.70

Finding the Fourth Proportional to 156,911.86, 216,542.58 and 85,296.70

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Solution

The fourth proportional to 156,911.86, 216,542.58 and 85,296.70 is: 117,711.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,911.86 : 216,542.58 = 85,296.70 : x
  2. Step 2: Convert to fraction form
    156,911.86/216,542.58 = 85,296.70/x
  3. Step 3: Cross multiply
    156,911.86x = 216,542.58 × 85,296.70
  4. Step 4: Simplify right side
    156,911.86x = 18,470,367,483.49
  5. Step 5: Solve for x
    x = 18,470,367,483.49/156,911.86
  6. Step 6: Final answer
    x = 117,711.74

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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.