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Finding the Fourth Proportional to 123,368.48, 185,065.74 and 39,140.60

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Solution

The fourth proportional to 123,368.48, 185,065.74 and 39,140.60 is: 58,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,368.48 : 185,065.74 = 39,140.60 : x
  2. Step 2: Convert to fraction form
    123,368.48/185,065.74 = 39,140.60/x
  3. Step 3: Cross multiply
    123,368.48x = 185,065.74 × 39,140.60
  4. Step 4: Simplify right side
    123,368.48x = 7,243,584,103.04
  5. Step 5: Solve for x
    x = 7,243,584,103.04/123,368.48
  6. Step 6: Final answer
    x = 58,715.03

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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.