Home / 142,294.12-196,349.16-78,628.12

Finding the Fourth Proportional to 142,294.12, 196,349.16 and 78,628.12

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Solution

The fourth proportional to 142,294.12, 196,349.16 and 78,628.12 is: 108,497.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,294.12 : 196,349.16 = 78,628.12 : x
  2. Step 2: Convert to fraction form
    142,294.12/196,349.16 = 78,628.12/x
  3. Step 3: Cross multiply
    142,294.12x = 196,349.16 × 78,628.12
  4. Step 4: Simplify right side
    142,294.12x = 15,438,565,118.36
  5. Step 5: Solve for x
    x = 15,438,565,118.36/142,294.12
  6. Step 6: Final answer
    x = 108,497.56

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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.