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Finding the Fourth Proportional to 129,693.50, 194,600.40 and 54,831.13

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Solution

The fourth proportional to 129,693.50, 194,600.40 and 54,831.13 is: 82,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,693.50 : 194,600.40 = 54,831.13 : x
  2. Step 2: Convert to fraction form
    129,693.50/194,600.40 = 54,831.13/x
  3. Step 3: Cross multiply
    129,693.50x = 194,600.40 × 54,831.13
  4. Step 4: Simplify right side
    129,693.50x = 10,670,159,292.55
  5. Step 5: Solve for x
    x = 10,670,159,292.55/129,693.50
  6. Step 6: Final answer
    x = 82,272.12

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1.5x scale

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.