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Finding the Fourth Proportional to 98,679, 136,180.26 and 53,967

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Solution

The fourth proportional to 98,679, 136,180.26 and 53,967 is: 74,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,679 : 136,180.26 = 53,967 : x
  2. Step 2: Convert to fraction form
    98,679/136,180.26 = 53,967/x
  3. Step 3: Cross multiply
    98,679x = 136,180.26 × 53,967
  4. Step 4: Simplify right side
    98,679x = 7,349,240,091.42
  5. Step 5: Solve for x
    x = 7,349,240,091.42/98,679
  6. Step 6: Final answer
    x = 74,476.23

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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.