Home / 143,003.45-197,344.80-79,341.10

Finding the Fourth Proportional to 143,003.45, 197,344.80 and 79,341.10

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Solution

The fourth proportional to 143,003.45, 197,344.80 and 79,341.10 is: 109,490.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.45 : 197,344.80 = 79,341.10 : x
  2. Step 2: Convert to fraction form
    143,003.45/197,344.80 = 79,341.10/x
  3. Step 3: Cross multiply
    143,003.45x = 197,344.80 × 79,341.10
  4. Step 4: Simplify right side
    143,003.45x = 15,657,553,017.92
  5. Step 5: Solve for x
    x = 15,657,553,017.92/143,003.45
  6. Step 6: Final answer
    x = 109,490.73

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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.