Home / 145,939.12-218,921.10-46,072.60

Finding the Fourth Proportional to 145,939.12, 218,921.10 and 46,072.60

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Solution

The fourth proportional to 145,939.12, 218,921.10 and 46,072.60 is: 69,112.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,939.12 : 218,921.10 = 46,072.60 : x
  2. Step 2: Convert to fraction form
    145,939.12/218,921.10 = 46,072.60/x
  3. Step 3: Cross multiply
    145,939.12x = 218,921.10 × 46,072.60
  4. Step 4: Simplify right side
    145,939.12x = 10,086,264,271.86
  5. Step 5: Solve for x
    x = 10,086,264,271.86/145,939.12
  6. Step 6: Final answer
    x = 69,112.82

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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.