Home / 126,931.20-190,267.20-74,313.60

Finding the Fourth Proportional to 126,931.20, 190,267.20 and 74,313.60

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Solution

The fourth proportional to 126,931.20, 190,267.20 and 74,313.60 is: 111,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,931.20 : 190,267.20 = 74,313.60 : x
  2. Step 2: Convert to fraction form
    126,931.20/190,267.20 = 74,313.60/x
  3. Step 3: Cross multiply
    126,931.20x = 190,267.20 × 74,313.60
  4. Step 4: Simplify right side
    126,931.20x = 14,139,440,593.92
  5. Step 5: Solve for x
    x = 14,139,440,593.92/126,931.20
  6. Step 6: Final answer
    x = 111,394.52

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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.