Home / 139,968,138.60-209,952,207.90-129,764,471.40

Finding the Fourth Proportional to 139,968,138.60, 209,952,207.90 and 129,764,471.40

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Solution

The fourth proportional to 139,968,138.60, 209,952,207.90 and 129,764,471.40 is: 194,646,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,138.60 : 209,952,207.90 = 129,764,471.40 : x
  2. Step 2: Convert to fraction form
    139,968,138.60/209,952,207.90 = 129,764,471.40/x
  3. Step 3: Cross multiply
    139,968,138.60x = 209,952,207.90 × 129,764,471.40
  4. Step 4: Simplify right side
    139,968,138.60x = 27,244,337,277,406,408
  5. Step 5: Solve for x
    x = 27,244,337,277,406,408/139,968,138.60
  6. Step 6: Final answer
    x = 194,646,707.10

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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.