Home / 145,007,768.70-217,511,653.05-87,676,875.90

Finding the Fourth Proportional to 145,007,768.70, 217,511,653.05 and 87,676,875.90

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Solution

The fourth proportional to 145,007,768.70, 217,511,653.05 and 87,676,875.90 is: 131,515,313.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,007,768.70 : 217,511,653.05 = 87,676,875.90 : x
  2. Step 2: Convert to fraction form
    145,007,768.70/217,511,653.05 = 87,676,875.90/x
  3. Step 3: Cross multiply
    145,007,768.70x = 217,511,653.05 × 87,676,875.90
  4. Step 4: Simplify right side
    145,007,768.70x = 19,070,742,211,268,708
  5. Step 5: Solve for x
    x = 19,070,742,211,268,708/145,007,768.70
  6. Step 6: Final answer
    x = 131,515,313.85

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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.