Home / 99,717.12-149,584.32-28,640.16

Finding the Fourth Proportional to 99,717.12, 149,584.32 and 28,640.16

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Solution

The fourth proportional to 99,717.12, 149,584.32 and 28,640.16 is: 42,962.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,717.12 : 149,584.32 = 28,640.16 : x
  2. Step 2: Convert to fraction form
    99,717.12/149,584.32 = 28,640.16/x
  3. Step 3: Cross multiply
    99,717.12x = 149,584.32 × 28,640.16
  4. Step 4: Simplify right side
    99,717.12x = 4,284,118,858.29
  5. Step 5: Solve for x
    x = 4,284,118,858.29/99,717.12
  6. Step 6: Final answer
    x = 42,962.72

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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.