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Finding the Fourth Proportional to 157,185.44, 216,915.94 and 85,566.01

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Solution

The fourth proportional to 157,185.44, 216,915.94 and 85,566.01 is: 118,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,185.44 : 216,915.94 = 85,566.01 : x
  2. Step 2: Convert to fraction form
    157,185.44/216,915.94 = 85,566.01/x
  3. Step 3: Cross multiply
    157,185.44x = 216,915.94 × 85,566.01
  4. Step 4: Simplify right side
    157,185.44x = 18,560,630,734.99
  5. Step 5: Solve for x
    x = 18,560,630,734.99/157,185.44
  6. Step 6: Final answer
    x = 118,081.10

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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.