Home / 142,846.80-197,129.04-79,185.60

Finding the Fourth Proportional to 142,846.80, 197,129.04 and 79,185.60

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Solution

The fourth proportional to 142,846.80, 197,129.04 and 79,185.60 is: 109,276.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,846.80 : 197,129.04 = 79,185.60 : x
  2. Step 2: Convert to fraction form
    142,846.80/197,129.04 = 79,185.60/x
  3. Step 3: Cross multiply
    142,846.80x = 197,129.04 × 79,185.60
  4. Step 4: Simplify right side
    142,846.80x = 15,609,781,309.82
  5. Step 5: Solve for x
    x = 15,609,781,309.82/142,846.80
  6. Step 6: Final answer
    x = 109,276.38

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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.