Home / 133,078.21-199,475.16-66,386.86

Finding the Fourth Proportional to 133,078.21, 199,475.16 and 66,386.86

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Solution

The fourth proportional to 133,078.21, 199,475.16 and 66,386.86 is: 99,509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,078.21 : 199,475.16 = 66,386.86 : x
  2. Step 2: Convert to fraction form
    133,078.21/199,475.16 = 66,386.86/x
  3. Step 3: Cross multiply
    133,078.21x = 199,475.16 × 66,386.86
  4. Step 4: Simplify right side
    133,078.21x = 13,242,529,520.40
  5. Step 5: Solve for x
    x = 13,242,529,520.40/133,078.21
  6. Step 6: Final answer
    x = 99,509.38

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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.