Home / 492,054.40-738,081.60-137,123.20

Finding the Fourth Proportional to 492,054.40, 738,081.60 and 137,123.20

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Solution

The fourth proportional to 492,054.40, 738,081.60 and 137,123.20 is: 205,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,054.40 : 738,081.60 = 137,123.20 : x
  2. Step 2: Convert to fraction form
    492,054.40/738,081.60 = 137,123.20/x
  3. Step 3: Cross multiply
    492,054.40x = 738,081.60 × 137,123.20
  4. Step 4: Simplify right side
    492,054.40x = 101,208,110,853.12
  5. Step 5: Solve for x
    x = 101,208,110,853.12/492,054.40
  6. Step 6: Final answer
    x = 205,684.80

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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.