Home / 154,561.84-213,298.05-86,578.28

Finding the Fourth Proportional to 154,561.84, 213,298.05 and 86,578.28

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Solution

The fourth proportional to 154,561.84, 213,298.05 and 86,578.28 is: 119,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,561.84 : 213,298.05 = 86,578.28 : x
  2. Step 2: Convert to fraction form
    154,561.84/213,298.05 = 86,578.28/x
  3. Step 3: Cross multiply
    154,561.84x = 213,298.05 × 86,578.28
  4. Step 4: Simplify right side
    154,561.84x = 18,466,978,296.35
  5. Step 5: Solve for x
    x = 18,466,978,296.35/154,561.84
  6. Step 6: Final answer
    x = 119,479.54

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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.