Home / 154,687.96-213,470.58-86,707.36

Finding the Fourth Proportional to 154,687.96, 213,470.58 and 86,707.36

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Solution

The fourth proportional to 154,687.96, 213,470.58 and 86,707.36 is: 119,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,687.96 : 213,470.58 = 86,707.36 : x
  2. Step 2: Convert to fraction form
    154,687.96/213,470.58 = 86,707.36/x
  3. Step 3: Cross multiply
    154,687.96x = 213,470.58 × 86,707.36
  4. Step 4: Simplify right side
    154,687.96x = 18,509,470,429.47
  5. Step 5: Solve for x
    x = 18,509,470,429.47/154,687.96
  6. Step 6: Final answer
    x = 119,656.83

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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.