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Finding the Fourth Proportional to 158,228.89, 218,361.87 and 90,256.93

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Solution

The fourth proportional to 158,228.89, 218,361.87 and 90,256.93 is: 124,557.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,228.89 : 218,361.87 = 90,256.93 : x
  2. Step 2: Convert to fraction form
    158,228.89/218,361.87 = 90,256.93/x
  3. Step 3: Cross multiply
    158,228.89x = 218,361.87 × 90,256.93
  4. Step 4: Simplify right side
    158,228.89x = 19,708,671,469.35
  5. Step 5: Solve for x
    x = 19,708,671,469.35/158,228.89
  6. Step 6: Final answer
    x = 124,557.99

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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.