Home / 154,810.29-213,440.42-100,266.20

Finding the Fourth Proportional to 154,810.29, 213,440.42 and 100,266.20

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Solution

The fourth proportional to 154,810.29, 213,440.42 and 100,266.20 is: 138,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,810.29 : 213,440.42 = 100,266.20 : x
  2. Step 2: Convert to fraction form
    154,810.29/213,440.42 = 100,266.20/x
  3. Step 3: Cross multiply
    154,810.29x = 213,440.42 × 100,266.20
  4. Step 4: Simplify right side
    154,810.29x = 21,400,860,460.27
  5. Step 5: Solve for x
    x = 21,400,860,460.27/154,810.29
  6. Step 6: Final answer
    x = 138,239.27

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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.