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Finding the Fourth Proportional to 153,850.59, 212,324.49 and 85,880.93

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Solution

The fourth proportional to 153,850.59, 212,324.49 and 85,880.93 is: 118,521.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,850.59 : 212,324.49 = 85,880.93 : x
  2. Step 2: Convert to fraction form
    153,850.59/212,324.49 = 85,880.93/x
  3. Step 3: Cross multiply
    153,850.59x = 212,324.49 × 85,880.93
  4. Step 4: Simplify right side
    153,850.59x = 18,234,623,601.35
  5. Step 5: Solve for x
    x = 18,234,623,601.35/153,850.59
  6. Step 6: Final answer
    x = 118,521.64

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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.