Home / 155,628.05-214,768.74-91,137.47

Finding the Fourth Proportional to 155,628.05, 214,768.74 and 91,137.47

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Solution

The fourth proportional to 155,628.05, 214,768.74 and 91,137.47 is: 125,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,628.05 : 214,768.74 = 91,137.47 : x
  2. Step 2: Convert to fraction form
    155,628.05/214,768.74 = 91,137.47/x
  3. Step 3: Cross multiply
    155,628.05x = 214,768.74 × 91,137.47
  4. Step 4: Simplify right side
    155,628.05x = 19,573,478,524.84
  5. Step 5: Solve for x
    x = 19,573,478,524.84/155,628.05
  6. Step 6: Final answer
    x = 125,770.90

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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.