Home / 129,877,031.20-194,815,546.80-81,504,090.40

Finding the Fourth Proportional to 129,877,031.20, 194,815,546.80 and 81,504,090.40

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Solution

The fourth proportional to 129,877,031.20, 194,815,546.80 and 81,504,090.40 is: 122,256,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,877,031.20 : 194,815,546.80 = 81,504,090.40 : x
  2. Step 2: Convert to fraction form
    129,877,031.20/194,815,546.80 = 81,504,090.40/x
  3. Step 3: Cross multiply
    129,877,031.20x = 194,815,546.80 × 81,504,090.40
  4. Step 4: Simplify right side
    129,877,031.20x = 15,878,263,937,712,632
  5. Step 5: Solve for x
    x = 15,878,263,937,712,632/129,877,031.20
  6. Step 6: Final answer
    x = 122,256,135.60

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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.