Home / 211,942.53-292,311.45-139,419.90

Finding the Fourth Proportional to 211,942.53, 292,311.45 and 139,419.90

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Solution

The fourth proportional to 211,942.53, 292,311.45 and 139,419.90 is: 192,288.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,942.53 : 292,311.45 = 139,419.90 : x
  2. Step 2: Convert to fraction form
    211,942.53/292,311.45 = 139,419.90/x
  3. Step 3: Cross multiply
    211,942.53x = 292,311.45 × 139,419.90
  4. Step 4: Simplify right side
    211,942.53x = 40,754,033,127.86
  5. Step 5: Solve for x
    x = 40,754,033,127.86/211,942.53
  6. Step 6: Final answer
    x = 192,288.13

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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.