Home / 143,147.74-197,542.80-79,485.76

Finding the Fourth Proportional to 143,147.74, 197,542.80 and 79,485.76

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Solution

The fourth proportional to 143,147.74, 197,542.80 and 79,485.76 is: 109,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,147.74 : 197,542.80 = 79,485.76 : x
  2. Step 2: Convert to fraction form
    143,147.74/197,542.80 = 79,485.76/x
  3. Step 3: Cross multiply
    143,147.74x = 197,542.80 × 79,485.76
  4. Step 4: Simplify right side
    143,147.74x = 15,701,839,590.53
  5. Step 5: Solve for x
    x = 15,701,839,590.53/143,147.74
  6. Step 6: Final answer
    x = 109,689.75

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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.