Home / 156,764.86-216,336.18-85,146.10

Finding the Fourth Proportional to 156,764.86, 216,336.18 and 85,146.10

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Solution

The fourth proportional to 156,764.86, 216,336.18 and 85,146.10 is: 117,501.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,764.86 : 216,336.18 = 85,146.10 : x
  2. Step 2: Convert to fraction form
    156,764.86/216,336.18 = 85,146.10/x
  3. Step 3: Cross multiply
    156,764.86x = 216,336.18 × 85,146.10
  4. Step 4: Simplify right side
    156,764.86x = 18,420,182,015.90
  5. Step 5: Solve for x
    x = 18,420,182,015.90/156,764.86
  6. Step 6: Final answer
    x = 117,501.98

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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.