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Finding the Fourth Proportional to 117,612.56, 162,293.63 and 66,615.12

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Solution

The fourth proportional to 117,612.56, 162,293.63 and 66,615.12 is: 91,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,612.56 : 162,293.63 = 66,615.12 : x
  2. Step 2: Convert to fraction form
    117,612.56/162,293.63 = 66,615.12/x
  3. Step 3: Cross multiply
    117,612.56x = 162,293.63 × 66,615.12
  4. Step 4: Simplify right side
    117,612.56x = 10,811,209,304.61
  5. Step 5: Solve for x
    x = 10,811,209,304.61/117,612.56
  6. Step 6: Final answer
    x = 91,922.23

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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.