Home / 84,129,809.40-126,194,714.10-80,161,716.60

Finding the Fourth Proportional to 84,129,809.40, 126,194,714.10 and 80,161,716.60

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Solution

The fourth proportional to 84,129,809.40, 126,194,714.10 and 80,161,716.60 is: 120,242,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,129,809.40 : 126,194,714.10 = 80,161,716.60 : x
  2. Step 2: Convert to fraction form
    84,129,809.40/126,194,714.10 = 80,161,716.60/x
  3. Step 3: Cross multiply
    84,129,809.40x = 126,194,714.10 × 80,161,716.60
  4. Step 4: Simplify right side
    84,129,809.40x = 10,115,984,908,102,222
  5. Step 5: Solve for x
    x = 10,115,984,908,102,222/84,129,809.40
  6. Step 6: Final answer
    x = 120,242,574.90

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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.