Home / 100,904.64-139,315.50-62,721.24

Finding the Fourth Proportional to 100,904.64, 139,315.50 and 62,721.24

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Solution

The fourth proportional to 100,904.64, 139,315.50 and 62,721.24 is: 86,597.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,904.64 : 139,315.50 = 62,721.24 : x
  2. Step 2: Convert to fraction form
    100,904.64/139,315.50 = 62,721.24/x
  3. Step 3: Cross multiply
    100,904.64x = 139,315.50 × 62,721.24
  4. Step 4: Simplify right side
    100,904.64x = 8,738,040,911.22
  5. Step 5: Solve for x
    x = 8,738,040,911.22/100,904.64
  6. Step 6: Final answer
    x = 86,597.02

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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.