Home / 139,459.20-209,071.68-97,215.12

Finding the Fourth Proportional to 139,459.20, 209,071.68 and 97,215.12

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Solution

The fourth proportional to 139,459.20, 209,071.68 and 97,215.12 is: 145,741.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,459.20 : 209,071.68 = 97,215.12 : x
  2. Step 2: Convert to fraction form
    139,459.20/209,071.68 = 97,215.12/x
  3. Step 3: Cross multiply
    139,459.20x = 209,071.68 × 97,215.12
  4. Step 4: Simplify right side
    139,459.20x = 20,324,928,459.80
  5. Step 5: Solve for x
    x = 20,324,928,459.80/139,459.20
  6. Step 6: Final answer
    x = 145,741.04

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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.