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Finding the Fourth Proportional to 139,662.70, 209,494.05 and 97,672.30

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Solution

The fourth proportional to 139,662.70, 209,494.05 and 97,672.30 is: 146,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,662.70 : 209,494.05 = 97,672.30 : x
  2. Step 2: Convert to fraction form
    139,662.70/209,494.05 = 97,672.30/x
  3. Step 3: Cross multiply
    139,662.70x = 209,494.05 × 97,672.30
  4. Step 4: Simplify right side
    139,662.70x = 20,461,765,699.82
  5. Step 5: Solve for x
    x = 20,461,765,699.82/139,662.70
  6. Step 6: Final answer
    x = 146,508.45

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1.5x scale

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.