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Finding the Fourth Proportional to 145,698.75, 218,556.90 and 45,862.20

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Solution

The fourth proportional to 145,698.75, 218,556.90 and 45,862.20 is: 68,796.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,698.75 : 218,556.90 = 45,862.20 : x
  2. Step 2: Convert to fraction form
    145,698.75/218,556.90 = 45,862.20/x
  3. Step 3: Cross multiply
    145,698.75x = 218,556.90 × 45,862.20
  4. Step 4: Simplify right side
    145,698.75x = 10,023,500,259.18
  5. Step 5: Solve for x
    x = 10,023,500,259.18/145,698.75
  6. Step 6: Final answer
    x = 68,796.06

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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.