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Finding the Fourth Proportional to 105,959.94, 158,904.81 and 42,763.74

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Solution

The fourth proportional to 105,959.94, 158,904.81 and 42,763.74 is: 64,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,959.94 : 158,904.81 = 42,763.74 : x
  2. Step 2: Convert to fraction form
    105,959.94/158,904.81 = 42,763.74/x
  3. Step 3: Cross multiply
    105,959.94x = 158,904.81 × 42,763.74
  4. Step 4: Simplify right side
    105,959.94x = 6,795,363,979.59
  5. Step 5: Solve for x
    x = 6,795,363,979.59/105,959.94
  6. Step 6: Final answer
    x = 64,131.44

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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.