Home / 100,651.10-138,891.93-55,320.26

Finding the Fourth Proportional to 100,651.10, 138,891.93 and 55,320.26

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Solution

The fourth proportional to 100,651.10, 138,891.93 and 55,320.26 is: 76,338.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,651.10 : 138,891.93 = 55,320.26 : x
  2. Step 2: Convert to fraction form
    100,651.10/138,891.93 = 55,320.26/x
  3. Step 3: Cross multiply
    100,651.10x = 138,891.93 × 55,320.26
  4. Step 4: Simplify right side
    100,651.10x = 7,683,537,679.50
  5. Step 5: Solve for x
    x = 7,683,537,679.50/100,651.10
  6. Step 6: Final answer
    x = 76,338.34

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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.