Home / 105,209.19-145,186.43-57,462.75

Finding the Fourth Proportional to 105,209.19, 145,186.43 and 57,462.75

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Solution

The fourth proportional to 105,209.19, 145,186.43 and 57,462.75 is: 79,297.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,209.19 : 145,186.43 = 57,462.75 : x
  2. Step 2: Convert to fraction form
    105,209.19/145,186.43 = 57,462.75/x
  3. Step 3: Cross multiply
    105,209.19x = 145,186.43 × 57,462.75
  4. Step 4: Simplify right side
    105,209.19x = 8,342,811,243.17
  5. Step 5: Solve for x
    x = 8,342,811,243.17/105,209.19
  6. Step 6: Final answer
    x = 79,297.36

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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.