Home / 142,426.32-196,549.62-78,768.36

Finding the Fourth Proportional to 142,426.32, 196,549.62 and 78,768.36

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Solution

The fourth proportional to 142,426.32, 196,549.62 and 78,768.36 is: 108,701.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,426.32 : 196,549.62 = 78,768.36 : x
  2. Step 2: Convert to fraction form
    142,426.32/196,549.62 = 78,768.36/x
  3. Step 3: Cross multiply
    142,426.32x = 196,549.62 × 78,768.36
  4. Step 4: Simplify right side
    142,426.32x = 15,481,891,226.02
  5. Step 5: Solve for x
    x = 15,481,891,226.02/142,426.32
  6. Step 6: Final answer
    x = 108,701.05

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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.