Home / 158,117.26-218,361.20-100,783.60

Finding the Fourth Proportional to 158,117.26, 218,361.20 and 100,783.60

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Solution

The fourth proportional to 158,117.26, 218,361.20 and 100,783.60 is: 139,182.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,117.26 : 218,361.20 = 100,783.60 : x
  2. Step 2: Convert to fraction form
    158,117.26/218,361.20 = 100,783.60/x
  3. Step 3: Cross multiply
    158,117.26x = 218,361.20 × 100,783.60
  4. Step 4: Simplify right side
    158,117.26x = 22,007,227,836.32
  5. Step 5: Solve for x
    x = 22,007,227,836.32/158,117.26
  6. Step 6: Final answer
    x = 139,182.96

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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.