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Finding the Fourth Proportional to 148,485.70, 204,907.75 and 83,953.86

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Solution

The fourth proportional to 148,485.70, 204,907.75 and 83,953.86 is: 115,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,485.70 : 204,907.75 = 83,953.86 : x
  2. Step 2: Convert to fraction form
    148,485.70/204,907.75 = 83,953.86/x
  3. Step 3: Cross multiply
    148,485.70x = 204,907.75 × 83,953.86
  4. Step 4: Simplify right side
    148,485.70x = 17,202,796,346.53
  5. Step 5: Solve for x
    x = 17,202,796,346.53/148,485.70
  6. Step 6: Final answer
    x = 115,854.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.