Home / 156,881.72-216,498.44-85,261.74

Finding the Fourth Proportional to 156,881.72, 216,498.44 and 85,261.74

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Solution

The fourth proportional to 156,881.72, 216,498.44 and 85,261.74 is: 117,662.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,881.72 : 216,498.44 = 85,261.74 : x
  2. Step 2: Convert to fraction form
    156,881.72/216,498.44 = 85,261.74/x
  3. Step 3: Cross multiply
    156,881.72x = 216,498.44 × 85,261.74
  4. Step 4: Simplify right side
    156,881.72x = 18,459,033,701.69
  5. Step 5: Solve for x
    x = 18,459,033,701.69/156,881.72
  6. Step 6: Final answer
    x = 117,662.11

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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.