Home / 103,939.20-143,436.22-56,192.54

Finding the Fourth Proportional to 103,939.20, 143,436.22 and 56,192.54

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Solution

The fourth proportional to 103,939.20, 143,436.22 and 56,192.54 is: 77,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,939.20 : 143,436.22 = 56,192.54 : x
  2. Step 2: Convert to fraction form
    103,939.20/143,436.22 = 56,192.54/x
  3. Step 3: Cross multiply
    103,939.20x = 143,436.22 × 56,192.54
  4. Step 4: Simplify right side
    103,939.20x = 8,060,044,672.14
  5. Step 5: Solve for x
    x = 8,060,044,672.14/103,939.20
  6. Step 6: Final answer
    x = 77,545.76

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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.