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Finding the Fourth Proportional to 124,009.40, 186,474.90 and 103,734.20

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Solution

The fourth proportional to 124,009.40, 186,474.90 and 103,734.20 is: 155,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,009.40 : 186,474.90 = 103,734.20 : x
  2. Step 2: Convert to fraction form
    124,009.40/186,474.90 = 103,734.20/x
  3. Step 3: Cross multiply
    124,009.40x = 186,474.90 × 103,734.20
  4. Step 4: Simplify right side
    124,009.40x = 19,343,824,571.58
  5. Step 5: Solve for x
    x = 19,343,824,571.58/124,009.40
  6. Step 6: Final answer
    x = 155,986.76

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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.