Home / 126,784.40-189,946.20-103,283.60

Finding the Fourth Proportional to 126,784.40, 189,946.20 and 103,283.60

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Solution

The fourth proportional to 126,784.40, 189,946.20 and 103,283.60 is: 154,737.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,784.40 : 189,946.20 = 103,283.60 : x
  2. Step 2: Convert to fraction form
    126,784.40/189,946.20 = 103,283.60/x
  3. Step 3: Cross multiply
    126,784.40x = 189,946.20 × 103,283.60
  4. Step 4: Simplify right side
    126,784.40x = 19,618,327,342.32
  5. Step 5: Solve for x
    x = 19,618,327,342.32/126,784.40
  6. Step 6: Final answer
    x = 154,737.71

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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.