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Finding the Fourth Proportional to 133,641.60, 184,420.80 and 74,025.60

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Solution

The fourth proportional to 133,641.60, 184,420.80 and 74,025.60 is: 102,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,641.60 : 184,420.80 = 74,025.60 : x
  2. Step 2: Convert to fraction form
    133,641.60/184,420.80 = 74,025.60/x
  3. Step 3: Cross multiply
    133,641.60x = 184,420.80 × 74,025.60
  4. Step 4: Simplify right side
    133,641.60x = 13,651,860,372.48
  5. Step 5: Solve for x
    x = 13,651,860,372.48/133,641.60
  6. Step 6: Final answer
    x = 102,152.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.