Home / 119,975.64-179,970-31,229.40

Finding the Fourth Proportional to 119,975.64, 179,970 and 31,229.40

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Solution

The fourth proportional to 119,975.64, 179,970 and 31,229.40 is: 46,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,975.64 : 179,970 = 31,229.40 : x
  2. Step 2: Convert to fraction form
    119,975.64/179,970 = 31,229.40/x
  3. Step 3: Cross multiply
    119,975.64x = 179,970 × 31,229.40
  4. Step 4: Simplify right side
    119,975.64x = 5,620,355,118
  5. Step 5: Solve for x
    x = 5,620,355,118/119,975.64
  6. Step 6: Final answer
    x = 46,845.80

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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.