Home / 81,180.55-121,707.94-56,148.21

Finding the Fourth Proportional to 81,180.55, 121,707.94 and 56,148.21

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Solution

The fourth proportional to 81,180.55, 121,707.94 and 56,148.21 is: 84,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,180.55 : 121,707.94 = 56,148.21 : x
  2. Step 2: Convert to fraction form
    81,180.55/121,707.94 = 56,148.21/x
  3. Step 3: Cross multiply
    81,180.55x = 121,707.94 × 56,148.21
  4. Step 4: Simplify right side
    81,180.55x = 6,833,682,973.79
  5. Step 5: Solve for x
    x = 6,833,682,973.79/81,180.55
  6. Step 6: Final answer
    x = 84,178.82

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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.