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Finding the Fourth Proportional to 142,374.80, 213,101.40 and 131,315.60

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Solution

The fourth proportional to 142,374.80, 213,101.40 and 131,315.60 is: 196,548.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,374.80 : 213,101.40 = 131,315.60 : x
  2. Step 2: Convert to fraction form
    142,374.80/213,101.40 = 131,315.60/x
  3. Step 3: Cross multiply
    142,374.80x = 213,101.40 × 131,315.60
  4. Step 4: Simplify right side
    142,374.80x = 27,983,538,201.84
  5. Step 5: Solve for x
    x = 27,983,538,201.84/142,374.80
  6. Step 6: Final answer
    x = 196,548.39

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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.