Home / 124,629.38-186,987.78-77,827.58

Finding the Fourth Proportional to 124,629.38, 186,987.78 and 77,827.58

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Solution

The fourth proportional to 124,629.38, 186,987.78 and 77,827.58 is: 116,768.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,629.38 : 186,987.78 = 77,827.58 : x
  2. Step 2: Convert to fraction form
    124,629.38/186,987.78 = 77,827.58/x
  3. Step 3: Cross multiply
    124,629.38x = 186,987.78 × 77,827.58
  4. Step 4: Simplify right side
    124,629.38x = 14,552,806,406.97
  5. Step 5: Solve for x
    x = 14,552,806,406.97/124,629.38
  6. Step 6: Final answer
    x = 116,768.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.