Home / 154,828.60-213,665.79-86,860.60

Finding the Fourth Proportional to 154,828.60, 213,665.79 and 86,860.60

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Solution

The fourth proportional to 154,828.60, 213,665.79 and 86,860.60 is: 119,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,828.60 : 213,665.79 = 86,860.60 : x
  2. Step 2: Convert to fraction form
    154,828.60/213,665.79 = 86,860.60/x
  3. Step 3: Cross multiply
    154,828.60x = 213,665.79 × 86,860.60
  4. Step 4: Simplify right side
    154,828.60x = 18,559,138,718.87
  5. Step 5: Solve for x
    x = 18,559,138,718.87/154,828.60
  6. Step 6: Final answer
    x = 119,868.93

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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.