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Finding the Fourth Proportional to 106,804.47, 147,454.12 and 66,572.72

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Solution

The fourth proportional to 106,804.47, 147,454.12 and 66,572.72 is: 91,910.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,804.47 : 147,454.12 = 66,572.72 : x
  2. Step 2: Convert to fraction form
    106,804.47/147,454.12 = 66,572.72/x
  3. Step 3: Cross multiply
    106,804.47x = 147,454.12 × 66,572.72
  4. Step 4: Simplify right side
    106,804.47x = 9,816,422,571.93
  5. Step 5: Solve for x
    x = 9,816,422,571.93/106,804.47
  6. Step 6: Final answer
    x = 91,910.22

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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.