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Finding the Fourth Proportional to 194,911.60, 292,140.60 and 89,741.20

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Solution

The fourth proportional to 194,911.60, 292,140.60 and 89,741.20 is: 134,507.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,911.60 : 292,140.60 = 89,741.20 : x
  2. Step 2: Convert to fraction form
    194,911.60/292,140.60 = 89,741.20/x
  3. Step 3: Cross multiply
    194,911.60x = 292,140.60 × 89,741.20
  4. Step 4: Simplify right side
    194,911.60x = 26,217,048,012.72
  5. Step 5: Solve for x
    x = 26,217,048,012.72/194,911.60
  6. Step 6: Final answer
    x = 134,507.38

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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.