Home / 112,431.60-155,161.58-64,692.20

Finding the Fourth Proportional to 112,431.60, 155,161.58 and 64,692.20

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Solution

The fourth proportional to 112,431.60, 155,161.58 and 64,692.20 is: 89,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,431.60 : 155,161.58 = 64,692.20 : x
  2. Step 2: Convert to fraction form
    112,431.60/155,161.58 = 64,692.20/x
  3. Step 3: Cross multiply
    112,431.60x = 155,161.58 × 64,692.20
  4. Step 4: Simplify right side
    112,431.60x = 10,037,743,965.68
  5. Step 5: Solve for x
    x = 10,037,743,965.68/112,431.60
  6. Step 6: Final answer
    x = 89,278.67

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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.