Home / 141,181,988.21-194,835,874.67-78,460,729.28

Finding the Fourth Proportional to 141,181,988.21, 194,835,874.67 and 78,460,729.28

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Solution

The fourth proportional to 141,181,988.21, 194,835,874.67 and 78,460,729.28 is: 108,278,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,181,988.21 : 194,835,874.67 = 78,460,729.28 : x
  2. Step 2: Convert to fraction form
    141,181,988.21/194,835,874.67 = 78,460,729.28/x
  3. Step 3: Cross multiply
    141,181,988.21x = 194,835,874.67 × 78,460,729.28
  4. Step 4: Simplify right side
    141,181,988.21x = 15,286,964,816,173,258
  5. Step 5: Solve for x
    x = 15,286,964,816,173,258/141,181,988.21
  6. Step 6: Final answer
    x = 108,278,435.59

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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.