Home / 106,215.12-159,421.23-53,661.51

Finding the Fourth Proportional to 106,215.12, 159,421.23 and 53,661.51

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Solution

The fourth proportional to 106,215.12, 159,421.23 and 53,661.51 is: 80,542.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,215.12 : 159,421.23 = 53,661.51 : x
  2. Step 2: Convert to fraction form
    106,215.12/159,421.23 = 53,661.51/x
  3. Step 3: Cross multiply
    106,215.12x = 159,421.23 × 53,661.51
  4. Step 4: Simplify right side
    106,215.12x = 8,554,783,927.86
  5. Step 5: Solve for x
    x = 8,554,783,927.86/106,215.12
  6. Step 6: Final answer
    x = 80,542.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.