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Finding the Fourth Proportional to 144,076.68, 198,809.10 and 80,412.32

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Solution

The fourth proportional to 144,076.68, 198,809.10 and 80,412.32 is: 110,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,076.68 : 198,809.10 = 80,412.32 : x
  2. Step 2: Convert to fraction form
    144,076.68/198,809.10 = 80,412.32/x
  3. Step 3: Cross multiply
    144,076.68x = 198,809.10 × 80,412.32
  4. Step 4: Simplify right side
    144,076.68x = 15,986,700,968.11
  5. Step 5: Solve for x
    x = 15,986,700,968.11/144,076.68
  6. Step 6: Final answer
    x = 110,959.67

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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.