Home / 243,072.90-335,407-135,622.05

Finding the Fourth Proportional to 243,072.90, 335,407 and 135,622.05

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Solution

The fourth proportional to 243,072.90, 335,407 and 135,622.05 is: 187,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,072.90 : 335,407 = 135,622.05 : x
  2. Step 2: Convert to fraction form
    243,072.90/335,407 = 135,622.05/x
  3. Step 3: Cross multiply
    243,072.90x = 335,407 × 135,622.05
  4. Step 4: Simplify right side
    243,072.90x = 45,488,584,924.35
  5. Step 5: Solve for x
    x = 45,488,584,924.35/243,072.90
  6. Step 6: Final answer
    x = 187,139.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.