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Finding the Fourth Proportional to 104,165.40, 155,333.40 and 103,218.15

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Solution

The fourth proportional to 104,165.40, 155,333.40 and 103,218.15 is: 153,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,165.40 : 155,333.40 = 103,218.15 : x
  2. Step 2: Convert to fraction form
    104,165.40/155,333.40 = 103,218.15/x
  3. Step 3: Cross multiply
    104,165.40x = 155,333.40 × 103,218.15
  4. Step 4: Simplify right side
    104,165.40x = 16,033,226,181.21
  5. Step 5: Solve for x
    x = 16,033,226,181.21/104,165.40
  6. Step 6: Final answer
    x = 153,920.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.