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Finding the Fourth Proportional to 123,878.60, 184,881.78 and 111,921.20

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Solution

The fourth proportional to 123,878.60, 184,881.78 and 111,921.20 is: 167,036.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,878.60 : 184,881.78 = 111,921.20 : x
  2. Step 2: Convert to fraction form
    123,878.60/184,881.78 = 111,921.20/x
  3. Step 3: Cross multiply
    123,878.60x = 184,881.78 × 111,921.20
  4. Step 4: Simplify right side
    123,878.60x = 20,692,190,675.74
  5. Step 5: Solve for x
    x = 20,692,190,675.74/123,878.60
  6. Step 6: Final answer
    x = 167,036.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.