Home / 89,849.20-134,595.60-78,768.40

Finding the Fourth Proportional to 89,849.20, 134,595.60 and 78,768.40

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Solution

The fourth proportional to 89,849.20, 134,595.60 and 78,768.40 is: 117,996.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,849.20 : 134,595.60 = 78,768.40 : x
  2. Step 2: Convert to fraction form
    89,849.20/134,595.60 = 78,768.40/x
  3. Step 3: Cross multiply
    89,849.20x = 134,595.60 × 78,768.40
  4. Step 4: Simplify right side
    89,849.20x = 10,601,880,059.04
  5. Step 5: Solve for x
    x = 10,601,880,059.04/89,849.20
  6. Step 6: Final answer
    x = 117,996.38

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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.