Home / 156,881.68-216,498.40-85,261.71

Finding the Fourth Proportional to 156,881.68, 216,498.40 and 85,261.71

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Solution

The fourth proportional to 156,881.68, 216,498.40 and 85,261.71 is: 117,662.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,881.68 : 216,498.40 = 85,261.71 : x
  2. Step 2: Convert to fraction form
    156,881.68/216,498.40 = 85,261.71/x
  3. Step 3: Cross multiply
    156,881.68x = 216,498.40 × 85,261.71
  4. Step 4: Simplify right side
    156,881.68x = 18,459,022,771.24
  5. Step 5: Solve for x
    x = 18,459,022,771.24/156,881.68
  6. Step 6: Final answer
    x = 117,662.07

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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.