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Finding the Fourth Proportional to 103,497.90, 155,246.85 and 84,799.05

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Solution

The fourth proportional to 103,497.90, 155,246.85 and 84,799.05 is: 127,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,497.90 : 155,246.85 = 84,799.05 : x
  2. Step 2: Convert to fraction form
    103,497.90/155,246.85 = 84,799.05/x
  3. Step 3: Cross multiply
    103,497.90x = 155,246.85 × 84,799.05
  4. Step 4: Simplify right side
    103,497.90x = 13,164,785,395.49
  5. Step 5: Solve for x
    x = 13,164,785,395.49/103,497.90
  6. Step 6: Final answer
    x = 127,198.58

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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.