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Finding the Fourth Proportional to 99,670.32, 137,544.60 and 54,958.32

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Solution

The fourth proportional to 99,670.32, 137,544.60 and 54,958.32 is: 75,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,670.32 : 137,544.60 = 54,958.32 : x
  2. Step 2: Convert to fraction form
    99,670.32/137,544.60 = 54,958.32/x
  3. Step 3: Cross multiply
    99,670.32x = 137,544.60 × 54,958.32
  4. Step 4: Simplify right side
    99,670.32x = 7,559,220,141.07
  5. Step 5: Solve for x
    x = 7,559,220,141.07/99,670.32
  6. Step 6: Final answer
    x = 75,842.24

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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.