Home / 105,809.04-158,653.38-81,784.83

Finding the Fourth Proportional to 105,809.04, 158,653.38 and 81,784.83

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Solution

The fourth proportional to 105,809.04, 158,653.38 and 81,784.83 is: 122,630.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,809.04 : 158,653.38 = 81,784.83 : x
  2. Step 2: Convert to fraction form
    105,809.04/158,653.38 = 81,784.83/x
  3. Step 3: Cross multiply
    105,809.04x = 158,653.38 × 81,784.83
  4. Step 4: Simplify right side
    105,809.04x = 12,975,439,712.23
  5. Step 5: Solve for x
    x = 12,975,439,712.23/105,809.04
  6. Step 6: Final answer
    x = 122,630.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.