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Finding the Fourth Proportional to 121,838.40, 182,757.60 and 51,708.60

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Solution

The fourth proportional to 121,838.40, 182,757.60 and 51,708.60 is: 77,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,838.40 : 182,757.60 = 51,708.60 : x
  2. Step 2: Convert to fraction form
    121,838.40/182,757.60 = 51,708.60/x
  3. Step 3: Cross multiply
    121,838.40x = 182,757.60 × 51,708.60
  4. Step 4: Simplify right side
    121,838.40x = 9,450,139,635.36
  5. Step 5: Solve for x
    x = 9,450,139,635.36/121,838.40
  6. Step 6: Final answer
    x = 77,562.90

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1.5x scale

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.