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Finding the Fourth Proportional to 243,572.75, 336,107.30 and 136,140.32

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Solution

The fourth proportional to 243,572.75, 336,107.30 and 136,140.32 is: 187,860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,572.75 : 336,107.30 = 136,140.32 : x
  2. Step 2: Convert to fraction form
    243,572.75/336,107.30 = 136,140.32/x
  3. Step 3: Cross multiply
    243,572.75x = 336,107.30 × 136,140.32
  4. Step 4: Simplify right side
    243,572.75x = 45,757,755,376.34
  5. Step 5: Solve for x
    x = 45,757,755,376.34/243,572.75
  6. Step 6: Final answer
    x = 187,860.73

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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.