Home / 134,788.40-186,007.46-74,362.80

Finding the Fourth Proportional to 134,788.40, 186,007.46 and 74,362.80

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Solution

The fourth proportional to 134,788.40, 186,007.46 and 74,362.80 is: 102,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,788.40 : 186,007.46 = 74,362.80 : x
  2. Step 2: Convert to fraction form
    134,788.40/186,007.46 = 74,362.80/x
  3. Step 3: Cross multiply
    134,788.40x = 186,007.46 × 74,362.80
  4. Step 4: Simplify right side
    134,788.40x = 13,832,035,546.49
  5. Step 5: Solve for x
    x = 13,832,035,546.49/134,788.40
  6. Step 6: Final answer
    x = 102,620.37

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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.