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Finding the Fourth Proportional to 97,735.20, 146,602.80 and 85,682.40

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Solution

The fourth proportional to 97,735.20, 146,602.80 and 85,682.40 is: 128,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,735.20 : 146,602.80 = 85,682.40 : x
  2. Step 2: Convert to fraction form
    97,735.20/146,602.80 = 85,682.40/x
  3. Step 3: Cross multiply
    97,735.20x = 146,602.80 × 85,682.40
  4. Step 4: Simplify right side
    97,735.20x = 12,561,279,750.72
  5. Step 5: Solve for x
    x = 12,561,279,750.72/97,735.20
  6. Step 6: Final answer
    x = 128,523.60

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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.