Home / 100,075.33-138,102.78-54,752.77

Finding the Fourth Proportional to 100,075.33, 138,102.78 and 54,752.77

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Solution

The fourth proportional to 100,075.33, 138,102.78 and 54,752.77 is: 75,558.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,075.33 : 138,102.78 = 54,752.77 : x
  2. Step 2: Convert to fraction form
    100,075.33/138,102.78 = 54,752.77/x
  3. Step 3: Cross multiply
    100,075.33x = 138,102.78 × 54,752.77
  4. Step 4: Simplify right side
    100,075.33x = 7,561,509,749.70
  5. Step 5: Solve for x
    x = 7,561,509,749.70/100,075.33
  6. Step 6: Final answer
    x = 75,558.18

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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.