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Finding the Fourth Proportional to 123,395.60, 184,985.40 and 83,824.40

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Solution

The fourth proportional to 123,395.60, 184,985.40 and 83,824.40 is: 125,663.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.60 : 184,985.40 = 83,824.40 : x
  2. Step 2: Convert to fraction form
    123,395.60/184,985.40 = 83,824.40/x
  3. Step 3: Cross multiply
    123,395.60x = 184,985.40 × 83,824.40
  4. Step 4: Simplify right side
    123,395.60x = 15,506,290,163.76
  5. Step 5: Solve for x
    x = 15,506,290,163.76/123,395.60
  6. Step 6: Final answer
    x = 125,663.23

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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.