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Finding the Fourth Proportional to 139,783.78, 209,649.75 and 46,277.38

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Solution

The fourth proportional to 139,783.78, 209,649.75 and 46,277.38 is: 69,407.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,783.78 : 209,649.75 = 46,277.38 : x
  2. Step 2: Convert to fraction form
    139,783.78/209,649.75 = 46,277.38/x
  3. Step 3: Cross multiply
    139,783.78x = 209,649.75 × 46,277.38
  4. Step 4: Simplify right side
    139,783.78x = 9,702,041,147.66
  5. Step 5: Solve for x
    x = 9,702,041,147.66/139,783.78
  6. Step 6: Final answer
    x = 69,407.49

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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.