Home / 105,631.66-158,340.87-66,216.45

Finding the Fourth Proportional to 105,631.66, 158,340.87 and 66,216.45

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Solution

The fourth proportional to 105,631.66, 158,340.87 and 66,216.45 is: 99,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,631.66 : 158,340.87 = 66,216.45 : x
  2. Step 2: Convert to fraction form
    105,631.66/158,340.87 = 66,216.45/x
  3. Step 3: Cross multiply
    105,631.66x = 158,340.87 × 66,216.45
  4. Step 4: Simplify right side
    105,631.66x = 10,484,769,970.23
  5. Step 5: Solve for x
    x = 10,484,769,970.23/105,631.66
  6. Step 6: Final answer
    x = 99,257.84

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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.