Home / 100,838.54-139,151.76-55,507.70

Finding the Fourth Proportional to 100,838.54, 139,151.76 and 55,507.70

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Solution

The fourth proportional to 100,838.54, 139,151.76 and 55,507.70 is: 76,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,838.54 : 139,151.76 = 55,507.70 : x
  2. Step 2: Convert to fraction form
    100,838.54/139,151.76 = 55,507.70/x
  3. Step 3: Cross multiply
    100,838.54x = 139,151.76 × 55,507.70
  4. Step 4: Simplify right side
    100,838.54x = 7,723,994,148.55
  5. Step 5: Solve for x
    x = 7,723,994,148.55/100,838.54
  6. Step 6: Final answer
    x = 76,597.64

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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.