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Finding the Fourth Proportional to 129,812.40, 194,718.60 and 59,828.40

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Solution

The fourth proportional to 129,812.40, 194,718.60 and 59,828.40 is: 89,742.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,812.40 : 194,718.60 = 59,828.40 : x
  2. Step 2: Convert to fraction form
    129,812.40/194,718.60 = 59,828.40/x
  3. Step 3: Cross multiply
    129,812.40x = 194,718.60 × 59,828.40
  4. Step 4: Simplify right side
    129,812.40x = 11,649,702,288.24
  5. Step 5: Solve for x
    x = 11,649,702,288.24/129,812.40
  6. Step 6: Final answer
    x = 89,742.60

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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.