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Finding the Fourth Proportional to 139,130.93, 208,713.03 and 49,155.02

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Solution

The fourth proportional to 139,130.93, 208,713.03 and 49,155.02 is: 73,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,130.93 : 208,713.03 = 49,155.02 : x
  2. Step 2: Convert to fraction form
    139,130.93/208,713.03 = 49,155.02/x
  3. Step 3: Cross multiply
    139,130.93x = 208,713.03 × 49,155.02
  4. Step 4: Simplify right side
    139,130.93x = 10,259,292,120.35
  5. Step 5: Solve for x
    x = 10,259,292,120.35/139,130.93
  6. Step 6: Final answer
    x = 73,738.40

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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.