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Finding the Fourth Proportional to 117,750.72, 162,412.44 and 72,369.12

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Solution

The fourth proportional to 117,750.72, 162,412.44 and 72,369.12 is: 99,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,750.72 : 162,412.44 = 72,369.12 : x
  2. Step 2: Convert to fraction form
    117,750.72/162,412.44 = 72,369.12/x
  3. Step 3: Cross multiply
    117,750.72x = 162,412.44 × 72,369.12
  4. Step 4: Simplify right side
    117,750.72x = 11,753,645,359.85
  5. Step 5: Solve for x
    x = 11,753,645,359.85/117,750.72
  6. Step 6: Final answer
    x = 99,818.03

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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.