Home / 154,821.17-213,455.39-100,277.06

Finding the Fourth Proportional to 154,821.17, 213,455.39 and 100,277.06

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Solution

The fourth proportional to 154,821.17, 213,455.39 and 100,277.06 is: 138,254.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,821.17 : 213,455.39 = 100,277.06 : x
  2. Step 2: Convert to fraction form
    154,821.17/213,455.39 = 100,277.06/x
  3. Step 3: Cross multiply
    154,821.17x = 213,455.39 × 100,277.06
  4. Step 4: Simplify right side
    154,821.17x = 21,404,677,381.69
  5. Step 5: Solve for x
    x = 21,404,677,381.69/154,821.17
  6. Step 6: Final answer
    x = 138,254.20

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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.