Home / 105,254.77-145,249.88-57,507.09

Finding the Fourth Proportional to 105,254.77, 145,249.88 and 57,507.09

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Solution

The fourth proportional to 105,254.77, 145,249.88 and 57,507.09 is: 79,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,254.77 : 145,249.88 = 57,507.09 : x
  2. Step 2: Convert to fraction form
    105,254.77/145,249.88 = 57,507.09/x
  3. Step 3: Cross multiply
    105,254.77x = 145,249.88 × 57,507.09
  4. Step 4: Simplify right side
    105,254.77x = 8,352,897,921.65
  5. Step 5: Solve for x
    x = 8,352,897,921.65/105,254.77
  6. Step 6: Final answer
    x = 79,358.85

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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.