Home / 145,431.68-218,150.24-45,589.64

Finding the Fourth Proportional to 145,431.68, 218,150.24 and 45,589.64

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Solution

The fourth proportional to 145,431.68, 218,150.24 and 45,589.64 is: 68,385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,431.68 : 218,150.24 = 45,589.64 : x
  2. Step 2: Convert to fraction form
    145,431.68/218,150.24 = 45,589.64/x
  3. Step 3: Cross multiply
    145,431.68x = 218,150.24 × 45,589.64
  4. Step 4: Simplify right side
    145,431.68x = 9,945,390,907.51
  5. Step 5: Solve for x
    x = 9,945,390,907.51/145,431.68
  6. Step 6: Final answer
    x = 68,385.31

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1.5x scale

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.