Home / 142,223.40-196,267.06-78,565.64

Finding the Fourth Proportional to 142,223.40, 196,267.06 and 78,565.64

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Solution

The fourth proportional to 142,223.40, 196,267.06 and 78,565.64 is: 108,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,223.40 : 196,267.06 = 78,565.64 : x
  2. Step 2: Convert to fraction form
    142,223.40/196,267.06 = 78,565.64/x
  3. Step 3: Cross multiply
    142,223.40x = 196,267.06 × 78,565.64
  4. Step 4: Simplify right side
    142,223.40x = 15,419,847,179.82
  5. Step 5: Solve for x
    x = 15,419,847,179.82/142,223.40
  6. Step 6: Final answer
    x = 108,419.90

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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.