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Finding the Fourth Proportional to 97,940.80, 146,911.20 and 56,353.60

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Solution

The fourth proportional to 97,940.80, 146,911.20 and 56,353.60 is: 84,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,940.80 : 146,911.20 = 56,353.60 : x
  2. Step 2: Convert to fraction form
    97,940.80/146,911.20 = 56,353.60/x
  3. Step 3: Cross multiply
    97,940.80x = 146,911.20 × 56,353.60
  4. Step 4: Simplify right side
    97,940.80x = 8,278,975,000.32
  5. Step 5: Solve for x
    x = 8,278,975,000.32/97,940.80
  6. Step 6: Final answer
    x = 84,530.40

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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.