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Finding the Fourth Proportional to 118,775.55, 177,915.43 and 71,239.89

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Solution

The fourth proportional to 118,775.55, 177,915.43 and 71,239.89 is: 106,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,775.55 : 177,915.43 = 71,239.89 : x
  2. Step 2: Convert to fraction form
    118,775.55/177,915.43 = 71,239.89/x
  3. Step 3: Cross multiply
    118,775.55x = 177,915.43 × 71,239.89
  4. Step 4: Simplify right side
    118,775.55x = 12,674,675,662.50
  5. Step 5: Solve for x
    x = 12,674,675,662.50/118,775.55
  6. Step 6: Final answer
    x = 106,711.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.