Home / 105,120.88-145,065.68-57,373.84

Finding the Fourth Proportional to 105,120.88, 145,065.68 and 57,373.84

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Solution

The fourth proportional to 105,120.88, 145,065.68 and 57,373.84 is: 79,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,120.88 : 145,065.68 = 57,373.84 : x
  2. Step 2: Convert to fraction form
    105,120.88/145,065.68 = 57,373.84/x
  3. Step 3: Cross multiply
    105,120.88x = 145,065.68 × 57,373.84
  4. Step 4: Simplify right side
    105,120.88x = 8,322,975,113.81
  5. Step 5: Solve for x
    x = 8,322,975,113.81/105,120.88
  6. Step 6: Final answer
    x = 79,175.28

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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.