Home / 105,873.77-158,049.09-90,717.69

Finding the Fourth Proportional to 105,873.77, 158,049.09 and 90,717.69

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Solution

The fourth proportional to 105,873.77, 158,049.09 and 90,717.69 is: 135,423.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,873.77 : 158,049.09 = 90,717.69 : x
  2. Step 2: Convert to fraction form
    105,873.77/158,049.09 = 90,717.69/x
  3. Step 3: Cross multiply
    105,873.77x = 158,049.09 × 90,717.69
  4. Step 4: Simplify right side
    105,873.77x = 14,337,848,351.40
  5. Step 5: Solve for x
    x = 14,337,848,351.40/105,873.77
  6. Step 6: Final answer
    x = 135,423.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.