Home / 154,269.09-212,828.67-100,534.50

Finding the Fourth Proportional to 154,269.09, 212,828.67 and 100,534.50

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Solution

The fourth proportional to 154,269.09, 212,828.67 and 100,534.50 is: 138,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,269.09 : 212,828.67 = 100,534.50 : x
  2. Step 2: Convert to fraction form
    154,269.09/212,828.67 = 100,534.50/x
  3. Step 3: Cross multiply
    154,269.09x = 212,828.67 × 100,534.50
  4. Step 4: Simplify right side
    154,269.09x = 21,396,623,924.12
  5. Step 5: Solve for x
    x = 21,396,623,924.12/154,269.09
  6. Step 6: Final answer
    x = 138,696.77

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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.