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Finding the Fourth Proportional to 154,873.94, 213,801.13 and 103,868.01

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Solution

The fourth proportional to 154,873.94, 213,801.13 and 103,868.01 is: 143,388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,873.94 : 213,801.13 = 103,868.01 : x
  2. Step 2: Convert to fraction form
    154,873.94/213,801.13 = 103,868.01/x
  3. Step 3: Cross multiply
    154,873.94x = 213,801.13 × 103,868.01
  4. Step 4: Simplify right side
    154,873.94x = 22,207,097,389.51
  5. Step 5: Solve for x
    x = 22,207,097,389.51/154,873.94
  6. Step 6: Final answer
    x = 143,388.22

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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.