Home / 139,787.52-209,666.70-39,941.25

Finding the Fourth Proportional to 139,787.52, 209,666.70 and 39,941.25

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Solution

The fourth proportional to 139,787.52, 209,666.70 and 39,941.25 is: 59,907.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,787.52 : 209,666.70 = 39,941.25 : x
  2. Step 2: Convert to fraction form
    139,787.52/209,666.70 = 39,941.25/x
  3. Step 3: Cross multiply
    139,787.52x = 209,666.70 × 39,941.25
  4. Step 4: Simplify right side
    139,787.52x = 8,374,350,081.38
  5. Step 5: Solve for x
    x = 8,374,350,081.38/139,787.52
  6. Step 6: Final answer
    x = 59,907.71

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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.