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Finding the Fourth Proportional to 98,653, 136,144.50 and 53,943.88

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Solution

The fourth proportional to 98,653, 136,144.50 and 53,943.88 is: 74,444.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,653 : 136,144.50 = 53,943.88 : x
  2. Step 2: Convert to fraction form
    98,653/136,144.50 = 53,943.88/x
  3. Step 3: Cross multiply
    98,653x = 136,144.50 × 53,943.88
  4. Step 4: Simplify right side
    98,653x = 7,344,162,570.66
  5. Step 5: Solve for x
    x = 7,344,162,570.66/98,653
  6. Step 6: Final answer
    x = 74,444.39

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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.