Home / 100,899.08-151,348.20-30,778.16

Finding the Fourth Proportional to 100,899.08, 151,348.20 and 30,778.16

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Solution

The fourth proportional to 100,899.08, 151,348.20 and 30,778.16 is: 46,167.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,899.08 : 151,348.20 = 30,778.16 : x
  2. Step 2: Convert to fraction form
    100,899.08/151,348.20 = 30,778.16/x
  3. Step 3: Cross multiply
    100,899.08x = 151,348.20 × 30,778.16
  4. Step 4: Simplify right side
    100,899.08x = 4,658,219,115.31
  5. Step 5: Solve for x
    x = 4,658,219,115.31/100,899.08
  6. Step 6: Final answer
    x = 46,167.11

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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.