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Finding the Fourth Proportional to 104,759.12, 156,931.32 and 91,626.32

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Solution

The fourth proportional to 104,759.12, 156,931.32 and 91,626.32 is: 137,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,759.12 : 156,931.32 = 91,626.32 : x
  2. Step 2: Convert to fraction form
    104,759.12/156,931.32 = 91,626.32/x
  3. Step 3: Cross multiply
    104,759.12x = 156,931.32 × 91,626.32
  4. Step 4: Simplify right side
    104,759.12x = 14,379,039,344.34
  5. Step 5: Solve for x
    x = 14,379,039,344.34/104,759.12
  6. Step 6: Final answer
    x = 137,258.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.