Home / 126,321.04-189,300.60-92,778

Finding the Fourth Proportional to 126,321.04, 189,300.60 and 92,778

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Solution

The fourth proportional to 126,321.04, 189,300.60 and 92,778 is: 139,034.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,321.04 : 189,300.60 = 92,778 : x
  2. Step 2: Convert to fraction form
    126,321.04/189,300.60 = 92,778/x
  3. Step 3: Cross multiply
    126,321.04x = 189,300.60 × 92,778
  4. Step 4: Simplify right side
    126,321.04x = 17,562,931,066.80
  5. Step 5: Solve for x
    x = 17,562,931,066.80/126,321.04
  6. Step 6: Final answer
    x = 139,034.09

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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.