Home / 112,189.12-154,815.78-64,408.84

Finding the Fourth Proportional to 112,189.12, 154,815.78 and 64,408.84

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Solution

The fourth proportional to 112,189.12, 154,815.78 and 64,408.84 is: 88,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,189.12 : 154,815.78 = 64,408.84 : x
  2. Step 2: Convert to fraction form
    112,189.12/154,815.78 = 64,408.84/x
  3. Step 3: Cross multiply
    112,189.12x = 154,815.78 × 64,408.84
  4. Step 4: Simplify right side
    112,189.12x = 9,971,504,803.50
  5. Step 5: Solve for x
    x = 9,971,504,803.50/112,189.12
  6. Step 6: Final answer
    x = 88,881.21

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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.