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Finding the Fourth Proportional to 125,868.40, 188,802.60 and 102,828.40

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Solution

The fourth proportional to 125,868.40, 188,802.60 and 102,828.40 is: 154,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,868.40 : 188,802.60 = 102,828.40 : x
  2. Step 2: Convert to fraction form
    125,868.40/188,802.60 = 102,828.40/x
  3. Step 3: Cross multiply
    125,868.40x = 188,802.60 × 102,828.40
  4. Step 4: Simplify right side
    125,868.40x = 19,414,269,273.84
  5. Step 5: Solve for x
    x = 19,414,269,273.84/125,868.40
  6. Step 6: Final answer
    x = 154,242.60

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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.