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Finding the Fourth Proportional to 203,750.08, 305,744.10 and 85,412.32

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Solution

The fourth proportional to 203,750.08, 305,744.10 and 85,412.32 is: 128,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,750.08 : 305,744.10 = 85,412.32 : x
  2. Step 2: Convert to fraction form
    203,750.08/305,744.10 = 85,412.32/x
  3. Step 3: Cross multiply
    203,750.08x = 305,744.10 × 85,412.32
  4. Step 4: Simplify right side
    203,750.08x = 26,114,312,907.31
  5. Step 5: Solve for x
    x = 26,114,312,907.31/203,750.08
  6. Step 6: Final answer
    x = 128,168.36

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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.