Home / 100,328.14-138,454.39-55,010.26

Finding the Fourth Proportional to 100,328.14, 138,454.39 and 55,010.26

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Solution

The fourth proportional to 100,328.14, 138,454.39 and 55,010.26 is: 75,915.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.14 : 138,454.39 = 55,010.26 : x
  2. Step 2: Convert to fraction form
    100,328.14/138,454.39 = 55,010.26/x
  3. Step 3: Cross multiply
    100,328.14x = 138,454.39 × 55,010.26
  4. Step 4: Simplify right side
    100,328.14x = 7,616,411,992.04
  5. Step 5: Solve for x
    x = 7,616,411,992.04/100,328.14
  6. Step 6: Final answer
    x = 75,915.01

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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.