Home / 145,635.10-218,483.86-82,485.08

Finding the Fourth Proportional to 145,635.10, 218,483.86 and 82,485.08

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Solution

The fourth proportional to 145,635.10, 218,483.86 and 82,485.08 is: 123,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,635.10 : 218,483.86 = 82,485.08 : x
  2. Step 2: Convert to fraction form
    145,635.10/218,483.86 = 82,485.08/x
  3. Step 3: Cross multiply
    145,635.10x = 218,483.86 × 82,485.08
  4. Step 4: Simplify right side
    145,635.10x = 18,021,658,670.81
  5. Step 5: Solve for x
    x = 18,021,658,670.81/145,635.10
  6. Step 6: Final answer
    x = 123,745.30

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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.