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Finding the Fourth Proportional to 184,872.14, 255,123.36 and 99,989

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Solution

The fourth proportional to 184,872.14, 255,123.36 and 99,989 is: 137,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,872.14 : 255,123.36 = 99,989 : x
  2. Step 2: Convert to fraction form
    184,872.14/255,123.36 = 99,989/x
  3. Step 3: Cross multiply
    184,872.14x = 255,123.36 × 99,989
  4. Step 4: Simplify right side
    184,872.14x = 25,509,529,643.04
  5. Step 5: Solve for x
    x = 25,509,529,643.04/184,872.14
  6. Step 6: Final answer
    x = 137,984.72

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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.