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Finding the Fourth Proportional to 198,060, 297,128.88 and 87,252

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Solution

The fourth proportional to 198,060, 297,128.88 and 87,252 is: 130,895.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,060 : 297,128.88 = 87,252 : x
  2. Step 2: Convert to fraction form
    198,060/297,128.88 = 87,252/x
  3. Step 3: Cross multiply
    198,060x = 297,128.88 × 87,252
  4. Step 4: Simplify right side
    198,060x = 25,925,089,037.76
  5. Step 5: Solve for x
    x = 25,925,089,037.76/198,060
  6. Step 6: Final answer
    x = 130,895.13

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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.