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Finding the Fourth Proportional to 126,653.44, 189,999.60 and 43,528

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Solution

The fourth proportional to 126,653.44, 189,999.60 and 43,528 is: 65,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,653.44 : 189,999.60 = 43,528 : x
  2. Step 2: Convert to fraction form
    126,653.44/189,999.60 = 43,528/x
  3. Step 3: Cross multiply
    126,653.44x = 189,999.60 × 43,528
  4. Step 4: Simplify right side
    126,653.44x = 8,270,302,588.80
  5. Step 5: Solve for x
    x = 8,270,302,588.80/126,653.44
  6. Step 6: Final answer
    x = 65,298.68

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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.