Home / 156,965.81-216,611.73-85,345.88

Finding the Fourth Proportional to 156,965.81, 216,611.73 and 85,345.88

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Solution

The fourth proportional to 156,965.81, 216,611.73 and 85,345.88 is: 117,776.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.81 : 216,611.73 = 85,345.88 : x
  2. Step 2: Convert to fraction form
    156,965.81/216,611.73 = 85,345.88/x
  3. Step 3: Cross multiply
    156,965.81x = 216,611.73 × 85,345.88
  4. Step 4: Simplify right side
    156,965.81x = 18,486,917,632.11
  5. Step 5: Solve for x
    x = 18,486,917,632.11/156,965.81
  6. Step 6: Final answer
    x = 117,776.72

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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.