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Finding the Fourth Proportional to 121,345.60, 181,629.60 and 94,907.20

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Solution

The fourth proportional to 121,345.60, 181,629.60 and 94,907.20 is: 142,056.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,345.60 : 181,629.60 = 94,907.20 : x
  2. Step 2: Convert to fraction form
    121,345.60/181,629.60 = 94,907.20/x
  3. Step 3: Cross multiply
    121,345.60x = 181,629.60 × 94,907.20
  4. Step 4: Simplify right side
    121,345.60x = 17,237,956,773.12
  5. Step 5: Solve for x
    x = 17,237,956,773.12/121,345.60
  6. Step 6: Final answer
    x = 142,056.71

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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.