Home / 281,140.86-421,645.05-103,551.42

Finding the Fourth Proportional to 281,140.86, 421,645.05 and 103,551.42

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Solution

The fourth proportional to 281,140.86, 421,645.05 and 103,551.42 is: 155,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,140.86 : 421,645.05 = 103,551.42 : x
  2. Step 2: Convert to fraction form
    281,140.86/421,645.05 = 103,551.42/x
  3. Step 3: Cross multiply
    281,140.86x = 421,645.05 × 103,551.42
  4. Step 4: Simplify right side
    281,140.86x = 43,661,943,663.47
  5. Step 5: Solve for x
    x = 43,661,943,663.47/281,140.86
  6. Step 6: Final answer
    x = 155,302.73

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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.