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Finding the Fourth Proportional to 123,504.41, 185,212.74 and 53,345.45

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Solution

The fourth proportional to 123,504.41, 185,212.74 and 53,345.45 is: 79,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,504.41 : 185,212.74 = 53,345.45 : x
  2. Step 2: Convert to fraction form
    123,504.41/185,212.74 = 53,345.45/x
  3. Step 3: Cross multiply
    123,504.41x = 185,212.74 × 53,345.45
  4. Step 4: Simplify right side
    123,504.41x = 9,880,256,961.03
  5. Step 5: Solve for x
    x = 9,880,256,961.03/123,504.41
  6. Step 6: Final answer
    x = 79,999.22

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1.5x scale

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.