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Finding the Fourth Proportional to 117,188.59, 161,730.20 and 66,210.69

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Solution

The fourth proportional to 117,188.59, 161,730.20 and 66,210.69 is: 91,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,188.59 : 161,730.20 = 66,210.69 : x
  2. Step 2: Convert to fraction form
    117,188.59/161,730.20 = 66,210.69/x
  3. Step 3: Cross multiply
    117,188.59x = 161,730.20 × 66,210.69
  4. Step 4: Simplify right side
    117,188.59x = 10,708,268,135.84
  5. Step 5: Solve for x
    x = 10,708,268,135.84/117,188.59
  6. Step 6: Final answer
    x = 91,376.37

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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.