Home / 147,405.87-203,420.79-83,747.16

Finding the Fourth Proportional to 147,405.87, 203,420.79 and 83,747.16

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Solution

The fourth proportional to 147,405.87, 203,420.79 and 83,747.16 is: 115,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,405.87 : 203,420.79 = 83,747.16 : x
  2. Step 2: Convert to fraction form
    147,405.87/203,420.79 = 83,747.16/x
  3. Step 3: Cross multiply
    147,405.87x = 203,420.79 × 83,747.16
  4. Step 4: Simplify right side
    147,405.87x = 17,035,913,447.46
  5. Step 5: Solve for x
    x = 17,035,913,447.46/147,405.87
  6. Step 6: Final answer
    x = 115,571.47

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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.