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Finding the Fourth Proportional to 186,310, 257,172.60 and 110,856.88

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Solution

The fourth proportional to 186,310, 257,172.60 and 110,856.88 is: 153,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,310 : 257,172.60 = 110,856.88 : x
  2. Step 2: Convert to fraction form
    186,310/257,172.60 = 110,856.88/x
  3. Step 3: Cross multiply
    186,310x = 257,172.60 × 110,856.88
  4. Step 4: Simplify right side
    186,310x = 28,509,352,057.49
  5. Step 5: Solve for x
    x = 28,509,352,057.49/186,310
  6. Step 6: Final answer
    x = 153,021.05

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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.