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Finding the Fourth Proportional to 97,790.60, 146,858.70 and 75,657.80

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Solution

The fourth proportional to 97,790.60, 146,858.70 and 75,657.80 is: 113,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,790.60 : 146,858.70 = 75,657.80 : x
  2. Step 2: Convert to fraction form
    97,790.60/146,858.70 = 75,657.80/x
  3. Step 3: Cross multiply
    97,790.60x = 146,858.70 × 75,657.80
  4. Step 4: Simplify right side
    97,790.60x = 11,111,006,152.86
  5. Step 5: Solve for x
    x = 11,111,006,152.86/97,790.60
  6. Step 6: Final answer
    x = 113,620.39

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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.