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Finding the Third Proportional to 40,180,140 and 87,210,000

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Solution

The third proportional to 40,180,140 and 87,210,000 is: 189,287,147.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,180,140 : 87,210,000 = 87,210,000 : x
  2. Step 2: Convert to fraction form
    40,180,140/87,210,000 = 87,210,000/x
  3. Step 3: Cross multiply
    40,180,140x = 87,210,000 × 87,210,000
  4. Step 4: Simplify right side
    40,180,140x = 7,605,584,100,000,000
  5. Step 5: Solve for x
    x = 7,605,584,100,000,000/40,180,140
  6. Step 6: Final answer
    x = 189,287,147.83

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.