Home / 208,182.40-312,362.70-66,039.28

Finding the Fourth Proportional to 208,182.40, 312,362.70 and 66,039.28

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Solution

The fourth proportional to 208,182.40, 312,362.70 and 66,039.28 is: 99,087.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,182.40 : 312,362.70 = 66,039.28 : x
  2. Step 2: Convert to fraction form
    208,182.40/312,362.70 = 66,039.28/x
  3. Step 3: Cross multiply
    208,182.40x = 312,362.70 × 66,039.28
  4. Step 4: Simplify right side
    208,182.40x = 20,628,207,806.86
  5. Step 5: Solve for x
    x = 20,628,207,806.86/208,182.40
  6. Step 6: Final answer
    x = 99,087.18

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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.