Home / 134,915.07-186,204.68-78,359.25

Finding the Fourth Proportional to 134,915.07, 186,204.68 and 78,359.25

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Solution

The fourth proportional to 134,915.07, 186,204.68 and 78,359.25 is: 108,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,915.07 : 186,204.68 = 78,359.25 : x
  2. Step 2: Convert to fraction form
    134,915.07/186,204.68 = 78,359.25/x
  3. Step 3: Cross multiply
    134,915.07x = 186,204.68 × 78,359.25
  4. Step 4: Simplify right side
    134,915.07x = 14,590,858,679.49
  5. Step 5: Solve for x
    x = 14,590,858,679.49/134,915.07
  6. Step 6: Final answer
    x = 108,148.47

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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.