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Finding the Fourth Proportional to 124,611.80, 186,960.90 and 54,541.40

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Solution

The fourth proportional to 124,611.80, 186,960.90 and 54,541.40 is: 81,831.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,611.80 : 186,960.90 = 54,541.40 : x
  2. Step 2: Convert to fraction form
    124,611.80/186,960.90 = 54,541.40/x
  3. Step 3: Cross multiply
    124,611.80x = 186,960.90 × 54,541.40
  4. Step 4: Simplify right side
    124,611.80x = 10,197,109,231.26
  5. Step 5: Solve for x
    x = 10,197,109,231.26/124,611.80
  6. Step 6: Final answer
    x = 81,831.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.