Home / 147,409.30-203,424.87-83,747.20

Finding the Fourth Proportional to 147,409.30, 203,424.87 and 83,747.20

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Solution

The fourth proportional to 147,409.30, 203,424.87 and 83,747.20 is: 115,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,409.30 : 203,424.87 = 83,747.20 : x
  2. Step 2: Convert to fraction form
    147,409.30/203,424.87 = 83,747.20/x
  3. Step 3: Cross multiply
    147,409.30x = 203,424.87 × 83,747.20
  4. Step 4: Simplify right side
    147,409.30x = 17,036,263,272.86
  5. Step 5: Solve for x
    x = 17,036,263,272.86/147,409.30
  6. Step 6: Final answer
    x = 115,571.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.