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Finding the Fourth Proportional to 117,216.55, 161,749.20 and 66,233.71

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Solution

The fourth proportional to 117,216.55, 161,749.20 and 66,233.71 is: 91,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,216.55 : 161,749.20 = 66,233.71 : x
  2. Step 2: Convert to fraction form
    117,216.55/161,749.20 = 66,233.71/x
  3. Step 3: Cross multiply
    117,216.55x = 161,749.20 × 66,233.71
  4. Step 4: Simplify right side
    117,216.55x = 10,713,249,605.53
  5. Step 5: Solve for x
    x = 10,713,249,605.53/117,216.55
  6. Step 6: Final answer
    x = 91,397.07

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1.5x scale

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.