Home / 105,786.70-145,983.00-59,218.92

Finding the Fourth Proportional to 105,786.70, 145,983.00 and 59,218.92

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Solution

The fourth proportional to 105,786.70, 145,983.00 and 59,218.92 is: 81,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,786.70 : 145,983.00 = 59,218.92 : x
  2. Step 2: Convert to fraction form
    105,786.70/145,983.00 = 59,218.92/x
  3. Step 3: Cross multiply
    105,786.70x = 145,983.00 × 59,218.92
  4. Step 4: Simplify right side
    105,786.70x = 8,644,955,820.43
  5. Step 5: Solve for x
    x = 8,644,955,820.43/105,786.70
  6. Step 6: Final answer
    x = 81,720.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.