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Finding the Fourth Proportional to 112,601.40, 168,902.10 and 65,830.20

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Solution

The fourth proportional to 112,601.40, 168,902.10 and 65,830.20 is: 98,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,601.40 : 168,902.10 = 65,830.20 : x
  2. Step 2: Convert to fraction form
    112,601.40/168,902.10 = 65,830.20/x
  3. Step 3: Cross multiply
    112,601.40x = 168,902.10 × 65,830.20
  4. Step 4: Simplify right side
    112,601.40x = 11,118,859,023.42
  5. Step 5: Solve for x
    x = 11,118,859,023.42/112,601.40
  6. Step 6: Final answer
    x = 98,745.30

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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.