Home / 85,140.99-127,595.58-40,155.34

Finding the Fourth Proportional to 85,140.99, 127,595.58 and 40,155.34

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Solution

The fourth proportional to 85,140.99, 127,595.58 and 40,155.34 is: 60,178.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.99 : 127,595.58 = 40,155.34 : x
  2. Step 2: Convert to fraction form
    85,140.99/127,595.58 = 40,155.34/x
  3. Step 3: Cross multiply
    85,140.99x = 127,595.58 × 40,155.34
  4. Step 4: Simplify right side
    85,140.99x = 5,123,643,520.71
  5. Step 5: Solve for x
    x = 5,123,643,520.71/85,140.99
  6. Step 6: Final answer
    x = 60,178.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.