Home / 134,870.84-186,122.43-74,441.60

Finding the Fourth Proportional to 134,870.84, 186,122.43 and 74,441.60

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Solution

The fourth proportional to 134,870.84, 186,122.43 and 74,441.60 is: 102,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,870.84 : 186,122.43 = 74,441.60 : x
  2. Step 2: Convert to fraction form
    134,870.84/186,122.43 = 74,441.60/x
  3. Step 3: Cross multiply
    134,870.84x = 186,122.43 × 74,441.60
  4. Step 4: Simplify right side
    134,870.84x = 13,855,250,554.48
  5. Step 5: Solve for x
    x = 13,855,250,554.48/134,870.84
  6. Step 6: Final answer
    x = 102,729.78

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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.