Home / 139,925.61-209,919.60-51,177.15

Finding the Fourth Proportional to 139,925.61, 209,919.60 and 51,177.15

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Solution

The fourth proportional to 139,925.61, 209,919.60 and 51,177.15 is: 76,777.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,925.61 : 209,919.60 = 51,177.15 : x
  2. Step 2: Convert to fraction form
    139,925.61/209,919.60 = 51,177.15/x
  3. Step 3: Cross multiply
    139,925.61x = 209,919.60 × 51,177.15
  4. Step 4: Simplify right side
    139,925.61x = 10,743,086,857.14
  5. Step 5: Solve for x
    x = 10,743,086,857.14/139,925.61
  6. Step 6: Final answer
    x = 76,777.13

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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.