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Finding the Fourth Proportional to 202,720.80, 279,762.54 and 134,620.32

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Solution

The fourth proportional to 202,720.80, 279,762.54 and 134,620.32 is: 185,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,720.80 : 279,762.54 = 134,620.32 : x
  2. Step 2: Convert to fraction form
    202,720.80/279,762.54 = 134,620.32/x
  3. Step 3: Cross multiply
    202,720.80x = 279,762.54 × 134,620.32
  4. Step 4: Simplify right side
    202,720.80x = 37,661,722,658.81
  5. Step 5: Solve for x
    x = 37,661,722,658.81/202,720.80
  6. Step 6: Final answer
    x = 185,781.25

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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.