Home / 153,420.96-211,786.44-103,149.12

Finding the Fourth Proportional to 153,420.96, 211,786.44 and 103,149.12

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Solution

The fourth proportional to 153,420.96, 211,786.44 and 103,149.12 is: 142,389.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,420.96 : 211,786.44 = 103,149.12 : x
  2. Step 2: Convert to fraction form
    153,420.96/211,786.44 = 103,149.12/x
  3. Step 3: Cross multiply
    153,420.96x = 211,786.44 × 103,149.12
  4. Step 4: Simplify right side
    153,420.96x = 21,845,584,913.93
  5. Step 5: Solve for x
    x = 21,845,584,913.93/153,420.96
  6. Step 6: Final answer
    x = 142,389.83

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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.