Home / 89,485.10-134,107.34-45,143.72

Finding the Fourth Proportional to 89,485.10, 134,107.34 and 45,143.72

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Solution

The fourth proportional to 89,485.10, 134,107.34 and 45,143.72 is: 67,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,485.10 : 134,107.34 = 45,143.72 : x
  2. Step 2: Convert to fraction form
    89,485.10/134,107.34 = 45,143.72/x
  3. Step 3: Cross multiply
    89,485.10x = 134,107.34 × 45,143.72
  4. Step 4: Simplify right side
    89,485.10x = 6,054,104,206.90
  5. Step 5: Solve for x
    x = 6,054,104,206.90/89,485.10
  6. Step 6: Final answer
    x = 67,654.89

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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.