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Finding the Fourth Proportional to 147,885.28, 204,089.08 and 87,491.28

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Solution

The fourth proportional to 147,885.28, 204,089.08 and 87,491.28 is: 120,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,885.28 : 204,089.08 = 87,491.28 : x
  2. Step 2: Convert to fraction form
    147,885.28/204,089.08 = 87,491.28/x
  3. Step 3: Cross multiply
    147,885.28x = 204,089.08 × 87,491.28
  4. Step 4: Simplify right side
    147,885.28x = 17,856,014,843.22
  5. Step 5: Solve for x
    x = 17,856,014,843.22/147,885.28
  6. Step 6: Final answer
    x = 120,742.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.