Home / 98,288.72-135,548.48-72,858.44

Finding the Fourth Proportional to 98,288.72, 135,548.48 and 72,858.44

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Solution

The fourth proportional to 98,288.72, 135,548.48 and 72,858.44 is: 100,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,288.72 : 135,548.48 = 72,858.44 : x
  2. Step 2: Convert to fraction form
    98,288.72/135,548.48 = 72,858.44/x
  3. Step 3: Cross multiply
    98,288.72x = 135,548.48 × 72,858.44
  4. Step 4: Simplify right side
    98,288.72x = 9,875,851,318.19
  5. Step 5: Solve for x
    x = 9,875,851,318.19/98,288.72
  6. Step 6: Final answer
    x = 100,477.97

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1.5x scale

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.