Home / 105,080.43-145,011.45-57,334.77

Finding the Fourth Proportional to 105,080.43, 145,011.45 and 57,334.77

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Solution

The fourth proportional to 105,080.43, 145,011.45 and 57,334.77 is: 79,122.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,080.43 : 145,011.45 = 57,334.77 : x
  2. Step 2: Convert to fraction form
    105,080.43/145,011.45 = 57,334.77/x
  3. Step 3: Cross multiply
    105,080.43x = 145,011.45 × 57,334.77
  4. Step 4: Simplify right side
    105,080.43x = 8,314,198,133.12
  5. Step 5: Solve for x
    x = 8,314,198,133.12/105,080.43
  6. Step 6: Final answer
    x = 79,122.23

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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.