Home / 145,007,765.20-217,511,647.80-87,676,872.40

Finding the Fourth Proportional to 145,007,765.20, 217,511,647.80 and 87,676,872.40

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Solution

The fourth proportional to 145,007,765.20, 217,511,647.80 and 87,676,872.40 is: 131,515,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,007,765.20 : 217,511,647.80 = 87,676,872.40 : x
  2. Step 2: Convert to fraction form
    145,007,765.20/217,511,647.80 = 87,676,872.40/x
  3. Step 3: Cross multiply
    145,007,765.20x = 217,511,647.80 × 87,676,872.40
  4. Step 4: Simplify right side
    145,007,765.20x = 19,070,740,989,674,344
  5. Step 5: Solve for x
    x = 19,070,740,989,674,344/145,007,765.20
  6. Step 6: Final answer
    x = 131,515,308.60

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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.