Home / 156,965.76-216,612.46-85,345.62

Finding the Fourth Proportional to 156,965.76, 216,612.46 and 85,345.62

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Solution

The fourth proportional to 156,965.76, 216,612.46 and 85,345.62 is: 117,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.76 : 216,612.46 = 85,345.62 : x
  2. Step 2: Convert to fraction form
    156,965.76/216,612.46 = 85,345.62/x
  3. Step 3: Cross multiply
    156,965.76x = 216,612.46 × 85,345.62
  4. Step 4: Simplify right side
    156,965.76x = 18,486,924,698.43
  5. Step 5: Solve for x
    x = 18,486,924,698.43/156,965.76
  6. Step 6: Final answer
    x = 117,776.80

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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.