Home / 89,939.36-134,898.27-69,968.78

Finding the Fourth Proportional to 89,939.36, 134,898.27 and 69,968.78

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Solution

The fourth proportional to 89,939.36, 134,898.27 and 69,968.78 is: 104,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,939.36 : 134,898.27 = 69,968.78 : x
  2. Step 2: Convert to fraction form
    89,939.36/134,898.27 = 69,968.78/x
  3. Step 3: Cross multiply
    89,939.36x = 134,898.27 × 69,968.78
  4. Step 4: Simplify right side
    89,939.36x = 9,438,666,701.52
  5. Step 5: Solve for x
    x = 9,438,666,701.52/89,939.36
  6. Step 6: Final answer
    x = 104,944.79

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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.