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Finding the Fourth Proportional to 99,373.60, 137,138.64 and 54,054.88

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Solution

The fourth proportional to 99,373.60, 137,138.64 and 54,054.88 is: 74,597.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,373.60 : 137,138.64 = 54,054.88 : x
  2. Step 2: Convert to fraction form
    99,373.60/137,138.64 = 54,054.88/x
  3. Step 3: Cross multiply
    99,373.60x = 137,138.64 × 54,054.88
  4. Step 4: Simplify right side
    99,373.60x = 7,413,012,728.56
  5. Step 5: Solve for x
    x = 7,413,012,728.56/99,373.60
  6. Step 6: Final answer
    x = 74,597.41

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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.