Home / 100,997.55-139,434.62-67,051.87

Finding the Fourth Proportional to 100,997.55, 139,434.62 and 67,051.87

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Solution

The fourth proportional to 100,997.55, 139,434.62 and 67,051.87 is: 92,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,997.55 : 139,434.62 = 67,051.87 : x
  2. Step 2: Convert to fraction form
    100,997.55/139,434.62 = 67,051.87/x
  3. Step 3: Cross multiply
    100,997.55x = 139,434.62 × 67,051.87
  4. Step 4: Simplify right side
    100,997.55x = 9,349,351,329.89
  5. Step 5: Solve for x
    x = 9,349,351,329.89/100,997.55
  6. Step 6: Final answer
    x = 92,570.08

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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.