Home / 99,986.19-138,015.69-57,561.63

Finding the Fourth Proportional to 99,986.19, 138,015.69 and 57,561.63

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Solution

The fourth proportional to 99,986.19, 138,015.69 and 57,561.63 is: 79,455.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,986.19 : 138,015.69 = 57,561.63 : x
  2. Step 2: Convert to fraction form
    99,986.19/138,015.69 = 57,561.63/x
  3. Step 3: Cross multiply
    99,986.19x = 138,015.69 × 57,561.63
  4. Step 4: Simplify right side
    99,986.19x = 7,944,408,081.97
  5. Step 5: Solve for x
    x = 7,944,408,081.97/99,986.19
  6. Step 6: Final answer
    x = 79,455.05

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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.