Home / 123,847.26-170,980.08-81,528.82

Finding the Fourth Proportional to 123,847.26, 170,980.08 and 81,528.82

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Solution

The fourth proportional to 123,847.26, 170,980.08 and 81,528.82 is: 112,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,847.26 : 170,980.08 = 81,528.82 : x
  2. Step 2: Convert to fraction form
    123,847.26/170,980.08 = 81,528.82/x
  3. Step 3: Cross multiply
    123,847.26x = 170,980.08 × 81,528.82
  4. Step 4: Simplify right side
    123,847.26x = 13,939,804,165.91
  5. Step 5: Solve for x
    x = 13,939,804,165.91/123,847.26
  6. Step 6: Final answer
    x = 112,556.42

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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.