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Finding the Fourth Proportional to 124,231.32, 186,289.80 and 39,975.90

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Solution

The fourth proportional to 124,231.32, 186,289.80 and 39,975.90 is: 59,945.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,231.32 : 186,289.80 = 39,975.90 : x
  2. Step 2: Convert to fraction form
    124,231.32/186,289.80 = 39,975.90/x
  3. Step 3: Cross multiply
    124,231.32x = 186,289.80 × 39,975.90
  4. Step 4: Simplify right side
    124,231.32x = 7,447,102,415.82
  5. Step 5: Solve for x
    x = 7,447,102,415.82/124,231.32
  6. Step 6: Final answer
    x = 59,945.45

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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.