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Finding the Fourth Proportional to 103,396.20, 155,240.10 and 64,030.20

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Solution

The fourth proportional to 103,396.20, 155,240.10 and 64,030.20 is: 96,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,396.20 : 155,240.10 = 64,030.20 : x
  2. Step 2: Convert to fraction form
    103,396.20/155,240.10 = 64,030.20/x
  3. Step 3: Cross multiply
    103,396.20x = 155,240.10 × 64,030.20
  4. Step 4: Simplify right side
    103,396.20x = 9,940,054,651.02
  5. Step 5: Solve for x
    x = 9,940,054,651.02/103,396.20
  6. Step 6: Final answer
    x = 96,135.59

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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.