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Finding the Fourth Proportional to 107,223.90, 147,907.08 and 66,867.60

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Solution

The fourth proportional to 107,223.90, 147,907.08 and 66,867.60 is: 92,238.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,223.90 : 147,907.08 = 66,867.60 : x
  2. Step 2: Convert to fraction form
    107,223.90/147,907.08 = 66,867.60/x
  3. Step 3: Cross multiply
    107,223.90x = 147,907.08 × 66,867.60
  4. Step 4: Simplify right side
    107,223.90x = 9,890,191,462.61
  5. Step 5: Solve for x
    x = 9,890,191,462.61/107,223.90
  6. Step 6: Final answer
    x = 92,238.68

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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.