Home / 148,683.12-205,184.21-80,700.72

Finding the Fourth Proportional to 148,683.12, 205,184.21 and 80,700.72

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Solution

The fourth proportional to 148,683.12, 205,184.21 and 80,700.72 is: 111,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,683.12 : 205,184.21 = 80,700.72 : x
  2. Step 2: Convert to fraction form
    148,683.12/205,184.21 = 80,700.72/x
  3. Step 3: Cross multiply
    148,683.12x = 205,184.21 × 80,700.72
  4. Step 4: Simplify right side
    148,683.12x = 16,558,513,076.13
  5. Step 5: Solve for x
    x = 16,558,513,076.13/148,683.12
  6. Step 6: Final answer
    x = 111,367.81

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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.