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Finding the Fourth Proportional to 175,459.62, 242,131.26 and 98,978.88

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Solution

The fourth proportional to 175,459.62, 242,131.26 and 98,978.88 is: 136,589.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,459.62 : 242,131.26 = 98,978.88 : x
  2. Step 2: Convert to fraction form
    175,459.62/242,131.26 = 98,978.88/x
  3. Step 3: Cross multiply
    175,459.62x = 242,131.26 × 98,978.88
  4. Step 4: Simplify right side
    175,459.62x = 23,965,880,927.79
  5. Step 5: Solve for x
    x = 23,965,880,927.79/175,459.62
  6. Step 6: Final answer
    x = 136,589.15

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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.