Home / 156,629.93-216,143.81-85,008.52

Finding the Fourth Proportional to 156,629.93, 216,143.81 and 85,008.52

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Solution

The fourth proportional to 156,629.93, 216,143.81 and 85,008.52 is: 117,308.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.93 : 216,143.81 = 85,008.52 : x
  2. Step 2: Convert to fraction form
    156,629.93/216,143.81 = 85,008.52/x
  3. Step 3: Cross multiply
    156,629.93x = 216,143.81 × 85,008.52
  4. Step 4: Simplify right side
    156,629.93x = 18,374,065,395.26
  5. Step 5: Solve for x
    x = 18,374,065,395.26/156,629.93
  6. Step 6: Final answer
    x = 117,308.78

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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.