Home / 156,965.43-216,611.16-85,345.50

Finding the Fourth Proportional to 156,965.43, 216,611.16 and 85,345.50

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Solution

The fourth proportional to 156,965.43, 216,611.16 and 85,345.50 is: 117,776.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.43 : 216,611.16 = 85,345.50 : x
  2. Step 2: Convert to fraction form
    156,965.43/216,611.16 = 85,345.50/x
  3. Step 3: Cross multiply
    156,965.43x = 216,611.16 × 85,345.50
  4. Step 4: Simplify right side
    156,965.43x = 18,486,787,755.78
  5. Step 5: Solve for x
    x = 18,486,787,755.78/156,965.43
  6. Step 6: Final answer
    x = 117,776.17

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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.