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Finding the Fourth Proportional to 142,052.40, 213,078.60 and 53,308.80

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Solution

The fourth proportional to 142,052.40, 213,078.60 and 53,308.80 is: 79,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,052.40 : 213,078.60 = 53,308.80 : x
  2. Step 2: Convert to fraction form
    142,052.40/213,078.60 = 53,308.80/x
  3. Step 3: Cross multiply
    142,052.40x = 213,078.60 × 53,308.80
  4. Step 4: Simplify right side
    142,052.40x = 11,358,964,471.68
  5. Step 5: Solve for x
    x = 11,358,964,471.68/142,052.40
  6. Step 6: Final answer
    x = 79,963.20

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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.