Home / 100,948.38-139,311.64-56,239.26

Finding the Fourth Proportional to 100,948.38, 139,311.64 and 56,239.26

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Solution

The fourth proportional to 100,948.38, 139,311.64 and 56,239.26 is: 77,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,948.38 : 139,311.64 = 56,239.26 : x
  2. Step 2: Convert to fraction form
    100,948.38/139,311.64 = 56,239.26/x
  3. Step 3: Cross multiply
    100,948.38x = 139,311.64 × 56,239.26
  4. Step 4: Simplify right side
    100,948.38x = 7,834,783,542.99
  5. Step 5: Solve for x
    x = 7,834,783,542.99/100,948.38
  6. Step 6: Final answer
    x = 77,611.78

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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.