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Finding the Fourth Proportional to 243,570.75, 336,104.54 and 136,138.32

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Solution

The fourth proportional to 243,570.75, 336,104.54 and 136,138.32 is: 187,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,570.75 : 336,104.54 = 136,138.32 : x
  2. Step 2: Convert to fraction form
    243,570.75/336,104.54 = 136,138.32/x
  3. Step 3: Cross multiply
    243,570.75x = 336,104.54 × 136,138.32
  4. Step 4: Simplify right side
    243,570.75x = 45,756,707,249.80
  5. Step 5: Solve for x
    x = 45,756,707,249.80/243,570.75
  6. Step 6: Final answer
    x = 187,857.98

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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.