Home / 105,131.92-145,080.84-57,384.88

Finding the Fourth Proportional to 105,131.92, 145,080.84 and 57,384.88

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Solution

The fourth proportional to 105,131.92, 145,080.84 and 57,384.88 is: 79,190.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,131.92 : 145,080.84 = 57,384.88 : x
  2. Step 2: Convert to fraction form
    105,131.92/145,080.84 = 57,384.88/x
  3. Step 3: Cross multiply
    105,131.92x = 145,080.84 × 57,384.88
  4. Step 4: Simplify right side
    105,131.92x = 8,325,446,593.70
  5. Step 5: Solve for x
    x = 8,325,446,593.70/105,131.92
  6. Step 6: Final answer
    x = 79,190.47

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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.