Home / 145,007,755.20-217,511,632.80-87,676,862.40

Finding the Fourth Proportional to 145,007,755.20, 217,511,632.80 and 87,676,862.40

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Solution

The fourth proportional to 145,007,755.20, 217,511,632.80 and 87,676,862.40 is: 131,515,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,007,755.20 : 217,511,632.80 = 87,676,862.40 : x
  2. Step 2: Convert to fraction form
    145,007,755.20/217,511,632.80 = 87,676,862.40/x
  3. Step 3: Cross multiply
    145,007,755.20x = 217,511,632.80 × 87,676,862.40
  4. Step 4: Simplify right side
    145,007,755.20x = 19,070,737,499,404,928
  5. Step 5: Solve for x
    x = 19,070,737,499,404,928/145,007,755.20
  6. Step 6: Final answer
    x = 131,515,293.60

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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.