Home / 105,105.56-157,641.39-30,208.64

Finding the Fourth Proportional to 105,105.56, 157,641.39 and 30,208.64

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Solution

The fourth proportional to 105,105.56, 157,641.39 and 30,208.64 is: 45,308.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,105.56 : 157,641.39 = 30,208.64 : x
  2. Step 2: Convert to fraction form
    105,105.56/157,641.39 = 30,208.64/x
  3. Step 3: Cross multiply
    105,105.56x = 157,641.39 × 30,208.64
  4. Step 4: Simplify right side
    105,105.56x = 4,762,131,211.40
  5. Step 5: Solve for x
    x = 4,762,131,211.40/105,105.56
  6. Step 6: Final answer
    x = 45,308.08

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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.