Home / 142,116.90-196,124.89-80,859.72

Finding the Fourth Proportional to 142,116.90, 196,124.89 and 80,859.72

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Solution

The fourth proportional to 142,116.90, 196,124.89 and 80,859.72 is: 111,588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,116.90 : 196,124.89 = 80,859.72 : x
  2. Step 2: Convert to fraction form
    142,116.90/196,124.89 = 80,859.72/x
  3. Step 3: Cross multiply
    142,116.90x = 196,124.89 × 80,859.72
  4. Step 4: Simplify right side
    142,116.90x = 15,858,603,488.28
  5. Step 5: Solve for x
    x = 15,858,603,488.28/142,116.90
  6. Step 6: Final answer
    x = 111,588.44

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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.