Home / 144,085.21-198,840.59-80,425.69

Finding the Fourth Proportional to 144,085.21, 198,840.59 and 80,425.69

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Solution

The fourth proportional to 144,085.21, 198,840.59 and 80,425.69 is: 110,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,085.21 : 198,840.59 = 80,425.69 : x
  2. Step 2: Convert to fraction form
    144,085.21/198,840.59 = 80,425.69/x
  3. Step 3: Cross multiply
    144,085.21x = 198,840.59 × 80,425.69
  4. Step 4: Simplify right side
    144,085.21x = 15,991,891,248.63
  5. Step 5: Solve for x
    x = 15,991,891,248.63/144,085.21
  6. Step 6: Final answer
    x = 110,989.12

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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.