Home / 203,158.08-280,218.89-139,385.16

Finding the Fourth Proportional to 203,158.08, 280,218.89 and 139,385.16

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Solution

The fourth proportional to 203,158.08, 280,218.89 and 139,385.16 is: 192,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,158.08 : 280,218.89 = 139,385.16 : x
  2. Step 2: Convert to fraction form
    203,158.08/280,218.89 = 139,385.16/x
  3. Step 3: Cross multiply
    203,158.08x = 280,218.89 × 139,385.16
  4. Step 4: Simplify right side
    203,158.08x = 39,058,354,120.75
  5. Step 5: Solve for x
    x = 39,058,354,120.75/203,158.08
  6. Step 6: Final answer
    x = 192,255.97

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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.