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Finding the Fourth Proportional to 158,653.96, 218,928.52 and 90,657.44

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Solution

The fourth proportional to 158,653.96, 218,928.52 and 90,657.44 is: 125,099.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,653.96 : 218,928.52 = 90,657.44 : x
  2. Step 2: Convert to fraction form
    158,653.96/218,928.52 = 90,657.44/x
  3. Step 3: Cross multiply
    158,653.96x = 218,928.52 × 90,657.44
  4. Step 4: Simplify right side
    158,653.96x = 19,847,499,166.19
  5. Step 5: Solve for x
    x = 19,847,499,166.19/158,653.96
  6. Step 6: Final answer
    x = 125,099.30

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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.