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Finding the Fourth Proportional to 123,155.49, 184,802.42 and 66,999.52

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Solution

The fourth proportional to 123,155.49, 184,802.42 and 66,999.52 is: 100,536.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,155.49 : 184,802.42 = 66,999.52 : x
  2. Step 2: Convert to fraction form
    123,155.49/184,802.42 = 66,999.52/x
  3. Step 3: Cross multiply
    123,155.49x = 184,802.42 × 66,999.52
  4. Step 4: Simplify right side
    123,155.49x = 12,381,673,434.84
  5. Step 5: Solve for x
    x = 12,381,673,434.84/123,155.49
  6. Step 6: Final answer
    x = 100,536.92

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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.