Home / 143,002.80-197,343.89-79,340.45

Finding the Fourth Proportional to 143,002.80, 197,343.89 and 79,340.45

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Solution

The fourth proportional to 143,002.80, 197,343.89 and 79,340.45 is: 109,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,002.80 : 197,343.89 = 79,340.45 : x
  2. Step 2: Convert to fraction form
    143,002.80/197,343.89 = 79,340.45/x
  3. Step 3: Cross multiply
    143,002.80x = 197,343.89 × 79,340.45
  4. Step 4: Simplify right side
    143,002.80x = 15,657,352,248.98
  5. Step 5: Solve for x
    x = 15,657,352,248.98/143,002.80
  6. Step 6: Final answer
    x = 109,489.83

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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.