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Finding the Fourth Proportional to 205,010.60, 307,515.90 and 125,868.20

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Solution

The fourth proportional to 205,010.60, 307,515.90 and 125,868.20 is: 188,802.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,010.60 : 307,515.90 = 125,868.20 : x
  2. Step 2: Convert to fraction form
    205,010.60/307,515.90 = 125,868.20/x
  3. Step 3: Cross multiply
    205,010.60x = 307,515.90 × 125,868.20
  4. Step 4: Simplify right side
    205,010.60x = 38,706,472,804.38
  5. Step 5: Solve for x
    x = 38,706,472,804.38/205,010.60
  6. Step 6: Final answer
    x = 188,802.30

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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.