Home / 145,008,005.70-217,512,008.55-87,677,112.90

Finding the Fourth Proportional to 145,008,005.70, 217,512,008.55 and 87,677,112.90

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Solution

The fourth proportional to 145,008,005.70, 217,512,008.55 and 87,677,112.90 is: 131,515,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008,005.70 : 217,512,008.55 = 87,677,112.90 : x
  2. Step 2: Convert to fraction form
    145,008,005.70/217,512,008.55 = 87,677,112.90/x
  3. Step 3: Cross multiply
    145,008,005.70x = 217,512,008.55 × 87,677,112.90
  4. Step 4: Simplify right side
    145,008,005.70x = 19,070,824,930,744,116
  5. Step 5: Solve for x
    x = 19,070,824,930,744,116/145,008,005.70
  6. Step 6: Final answer
    x = 131,515,669.35

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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.