Home / 142,406.80-196,520.87-80,312.36

Finding the Fourth Proportional to 142,406.80, 196,520.87 and 80,312.36

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Solution

The fourth proportional to 142,406.80, 196,520.87 and 80,312.36 is: 110,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,406.80 : 196,520.87 = 80,312.36 : x
  2. Step 2: Convert to fraction form
    142,406.80/196,520.87 = 80,312.36/x
  3. Step 3: Cross multiply
    142,406.80x = 196,520.87 × 80,312.36
  4. Step 4: Simplify right side
    142,406.80x = 15,783,054,077.13
  5. Step 5: Solve for x
    x = 15,783,054,077.13/142,406.80
  6. Step 6: Final answer
    x = 110,830.76

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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.