Home / 100,913.53-139,250.21-62,145.20

Finding the Fourth Proportional to 100,913.53, 139,250.21 and 62,145.20

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Solution

The fourth proportional to 100,913.53, 139,250.21 and 62,145.20 is: 85,753.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,913.53 : 139,250.21 = 62,145.20 : x
  2. Step 2: Convert to fraction form
    100,913.53/139,250.21 = 62,145.20/x
  3. Step 3: Cross multiply
    100,913.53x = 139,250.21 × 62,145.20
  4. Step 4: Simplify right side
    100,913.53x = 8,653,732,150.49
  5. Step 5: Solve for x
    x = 8,653,732,150.49/100,913.53
  6. Step 6: Final answer
    x = 85,753.93

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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.