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Finding the Fourth Proportional to 106,805.47, 147,455.50 and 66,573.72

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Solution

The fourth proportional to 106,805.47, 147,455.50 and 66,573.72 is: 91,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,805.47 : 147,455.50 = 66,573.72 : x
  2. Step 2: Convert to fraction form
    106,805.47/147,455.50 = 66,573.72/x
  3. Step 3: Cross multiply
    106,805.47x = 147,455.50 × 66,573.72
  4. Step 4: Simplify right side
    106,805.47x = 9,816,661,169.46
  5. Step 5: Solve for x
    x = 9,816,661,169.46/106,805.47
  6. Step 6: Final answer
    x = 91,911.60

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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.