Home / 105,631.68-145,771.80-63,200.28

Finding the Fourth Proportional to 105,631.68, 145,771.80 and 63,200.28

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Solution

The fourth proportional to 105,631.68, 145,771.80 and 63,200.28 is: 87,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,631.68 : 145,771.80 = 63,200.28 : x
  2. Step 2: Convert to fraction form
    105,631.68/145,771.80 = 63,200.28/x
  3. Step 3: Cross multiply
    105,631.68x = 145,771.80 × 63,200.28
  4. Step 4: Simplify right side
    105,631.68x = 9,212,818,576.10
  5. Step 5: Solve for x
    x = 9,212,818,576.10/105,631.68
  6. Step 6: Final answer
    x = 87,216.44

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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.