Home / 105,175.35-145,139.99-57,429.09

Finding the Fourth Proportional to 105,175.35, 145,139.99 and 57,429.09

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Solution

The fourth proportional to 105,175.35, 145,139.99 and 57,429.09 is: 79,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,175.35 : 145,139.99 = 57,429.09 : x
  2. Step 2: Convert to fraction form
    105,175.35/145,139.99 = 57,429.09/x
  3. Step 3: Cross multiply
    105,175.35x = 145,139.99 × 57,429.09
  4. Step 4: Simplify right side
    105,175.35x = 8,335,257,261.16
  5. Step 5: Solve for x
    x = 8,335,257,261.16/105,175.35
  6. Step 6: Final answer
    x = 79,251.05

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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.