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Finding the Fourth Proportional to 142,516.40, 213,724.20 and 49,000.40

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Solution

The fourth proportional to 142,516.40, 213,724.20 and 49,000.40 is: 73,483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,516.40 : 213,724.20 = 49,000.40 : x
  2. Step 2: Convert to fraction form
    142,516.40/213,724.20 = 49,000.40/x
  3. Step 3: Cross multiply
    142,516.40x = 213,724.20 × 49,000.40
  4. Step 4: Simplify right side
    142,516.40x = 10,472,571,289.68
  5. Step 5: Solve for x
    x = 10,472,571,289.68/142,516.40
  6. Step 6: Final answer
    x = 73,483.27

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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.