Home / 89,619.90-134,429.85-75,623.10

Finding the Fourth Proportional to 89,619.90, 134,429.85 and 75,623.10

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Solution

The fourth proportional to 89,619.90, 134,429.85 and 75,623.10 is: 113,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,619.90 : 134,429.85 = 75,623.10 : x
  2. Step 2: Convert to fraction form
    89,619.90/134,429.85 = 75,623.10/x
  3. Step 3: Cross multiply
    89,619.90x = 134,429.85 × 75,623.10
  4. Step 4: Simplify right side
    89,619.90x = 10,166,001,989.54
  5. Step 5: Solve for x
    x = 10,166,001,989.54/89,619.90
  6. Step 6: Final answer
    x = 113,434.65

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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.