Home / 154,553.40-213,291.70-86,566.39

Finding the Fourth Proportional to 154,553.40, 213,291.70 and 86,566.39

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Solution

The fourth proportional to 154,553.40, 213,291.70 and 86,566.39 is: 119,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,553.40 : 213,291.70 = 86,566.39 : x
  2. Step 2: Convert to fraction form
    154,553.40/213,291.70 = 86,566.39/x
  3. Step 3: Cross multiply
    154,553.40x = 213,291.70 × 86,566.39
  4. Step 4: Simplify right side
    154,553.40x = 18,463,891,736.32
  5. Step 5: Solve for x
    x = 18,463,891,736.32/154,553.40
  6. Step 6: Final answer
    x = 119,466.10

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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.