Home / 100,859.18-139,184.52-55,536.22

Finding the Fourth Proportional to 100,859.18, 139,184.52 and 55,536.22

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Solution

The fourth proportional to 100,859.18, 139,184.52 and 55,536.22 is: 76,639.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,859.18 : 139,184.52 = 55,536.22 : x
  2. Step 2: Convert to fraction form
    100,859.18/139,184.52 = 55,536.22/x
  3. Step 3: Cross multiply
    100,859.18x = 139,184.52 × 55,536.22
  4. Step 4: Simplify right side
    100,859.18x = 7,729,782,123.31
  5. Step 5: Solve for x
    x = 7,729,782,123.31/100,859.18
  6. Step 6: Final answer
    x = 76,639.35

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1.5x scale

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.