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Finding the Fourth Proportional to 158,228.76, 218,361.70 and 90,256.80

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Solution

The fourth proportional to 158,228.76, 218,361.70 and 90,256.80 is: 124,557.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,228.76 : 218,361.70 = 90,256.80 : x
  2. Step 2: Convert to fraction form
    158,228.76/218,361.70 = 90,256.80/x
  3. Step 3: Cross multiply
    158,228.76x = 218,361.70 × 90,256.80
  4. Step 4: Simplify right side
    158,228.76x = 19,708,628,284.56
  5. Step 5: Solve for x
    x = 19,708,628,284.56/158,228.76
  6. Step 6: Final answer
    x = 124,557.81

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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.