Home / 142,969.20-197,294.40-79,305.60

Finding the Fourth Proportional to 142,969.20, 197,294.40 and 79,305.60

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Solution

The fourth proportional to 142,969.20, 197,294.40 and 79,305.60 is: 109,440.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,969.20 : 197,294.40 = 79,305.60 : x
  2. Step 2: Convert to fraction form
    142,969.20/197,294.40 = 79,305.60/x
  3. Step 3: Cross multiply
    142,969.20x = 197,294.40 × 79,305.60
  4. Step 4: Simplify right side
    142,969.20x = 15,646,550,768.64
  5. Step 5: Solve for x
    x = 15,646,550,768.64/142,969.20
  6. Step 6: Final answer
    x = 109,440.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.