Home / 154,798.60-213,619.70-86,815.56

Finding the Fourth Proportional to 154,798.60, 213,619.70 and 86,815.56

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Solution

The fourth proportional to 154,798.60, 213,619.70 and 86,815.56 is: 119,804.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,798.60 : 213,619.70 = 86,815.56 : x
  2. Step 2: Convert to fraction form
    154,798.60/213,619.70 = 86,815.56/x
  3. Step 3: Cross multiply
    154,798.60x = 213,619.70 × 86,815.56
  4. Step 4: Simplify right side
    154,798.60x = 18,545,513,882.53
  5. Step 5: Solve for x
    x = 18,545,513,882.53/154,798.60
  6. Step 6: Final answer
    x = 119,804.14

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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.