Home / 100,764.53-139,074.93-57,772.91

Finding the Fourth Proportional to 100,764.53, 139,074.93 and 57,772.91

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Solution

The fourth proportional to 100,764.53, 139,074.93 and 57,772.91 is: 79,738.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,764.53 : 139,074.93 = 57,772.91 : x
  2. Step 2: Convert to fraction form
    100,764.53/139,074.93 = 57,772.91/x
  3. Step 3: Cross multiply
    100,764.53x = 139,074.93 × 57,772.91
  4. Step 4: Simplify right side
    100,764.53x = 8,034,762,718.77
  5. Step 5: Solve for x
    x = 8,034,762,718.77/100,764.53
  6. Step 6: Final answer
    x = 79,738.01

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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.