Home / 144,180-198,966.24-80,518.72

Finding the Fourth Proportional to 144,180, 198,966.24 and 80,518.72

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Solution

The fourth proportional to 144,180, 198,966.24 and 80,518.72 is: 111,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,180 : 198,966.24 = 80,518.72 : x
  2. Step 2: Convert to fraction form
    144,180/198,966.24 = 80,518.72/x
  3. Step 3: Cross multiply
    144,180x = 198,966.24 × 80,518.72
  4. Step 4: Simplify right side
    144,180x = 16,020,506,968.01
  5. Step 5: Solve for x
    x = 16,020,506,968.01/144,180
  6. Step 6: Final answer
    x = 111,114.63

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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.