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Finding the Fourth Proportional to 122,507.80, 183,783.30 and 43,667.80

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Solution

The fourth proportional to 122,507.80, 183,783.30 and 43,667.80 is: 65,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,507.80 : 183,783.30 = 43,667.80 : x
  2. Step 2: Convert to fraction form
    122,507.80/183,783.30 = 43,667.80/x
  3. Step 3: Cross multiply
    122,507.80x = 183,783.30 × 43,667.80
  4. Step 4: Simplify right side
    122,507.80x = 8,025,412,387.74
  5. Step 5: Solve for x
    x = 8,025,412,387.74/122,507.80
  6. Step 6: Final answer
    x = 65,509.40

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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.