Home / 156,643.07-216,167.83-85,023.09

Finding the Fourth Proportional to 156,643.07, 216,167.83 and 85,023.09

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Solution

The fourth proportional to 156,643.07, 216,167.83 and 85,023.09 is: 117,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,643.07 : 216,167.83 = 85,023.09 : x
  2. Step 2: Convert to fraction form
    156,643.07/216,167.83 = 85,023.09/x
  3. Step 3: Cross multiply
    156,643.07x = 216,167.83 × 85,023.09
  4. Step 4: Simplify right side
    156,643.07x = 18,379,256,652.64
  5. Step 5: Solve for x
    x = 18,379,256,652.64/156,643.07
  6. Step 6: Final answer
    x = 117,332.08

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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.