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Finding the Fourth Proportional to 133,689.60, 184,485.60 and 77,097.60

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Solution

The fourth proportional to 133,689.60, 184,485.60 and 77,097.60 is: 106,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,689.60 : 184,485.60 = 77,097.60 : x
  2. Step 2: Convert to fraction form
    133,689.60/184,485.60 = 77,097.60/x
  3. Step 3: Cross multiply
    133,689.60x = 184,485.60 × 77,097.60
  4. Step 4: Simplify right side
    133,689.60x = 14,223,396,994.56
  5. Step 5: Solve for x
    x = 14,223,396,994.56/133,689.60
  6. Step 6: Final answer
    x = 106,391.20

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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.