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Finding the Fourth Proportional to 117,048.29, 161,532.35 and 71,728.79

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Solution

The fourth proportional to 117,048.29, 161,532.35 and 71,728.79 is: 98,989.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,048.29 : 161,532.35 = 71,728.79 : x
  2. Step 2: Convert to fraction form
    117,048.29/161,532.35 = 71,728.79/x
  3. Step 3: Cross multiply
    117,048.29x = 161,532.35 × 71,728.79
  4. Step 4: Simplify right side
    117,048.29x = 11,586,520,224.39
  5. Step 5: Solve for x
    x = 11,586,520,224.39/117,048.29
  6. Step 6: Final answer
    x = 98,989.23

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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.