Home / 139,941.78-209,925.26-45,174.21

Finding the Fourth Proportional to 139,941.78, 209,925.26 and 45,174.21

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Solution

The fourth proportional to 139,941.78, 209,925.26 and 45,174.21 is: 67,765.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,941.78 : 209,925.26 = 45,174.21 : x
  2. Step 2: Convert to fraction form
    139,941.78/209,925.26 = 45,174.21/x
  3. Step 3: Cross multiply
    139,941.78x = 209,925.26 × 45,174.21
  4. Step 4: Simplify right side
    139,941.78x = 9,483,207,553.67
  5. Step 5: Solve for x
    x = 9,483,207,553.67/139,941.78
  6. Step 6: Final answer
    x = 67,765.38

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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.