Home / 172,631,212.80-258,521,666.40-81,648,513.60

Finding the Fourth Proportional to 172,631,212.80, 258,521,666.40 and 81,648,513.60

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Solution

The fourth proportional to 172,631,212.80, 258,521,666.40 and 81,648,513.60 is: 122,271,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,631,212.80 : 258,521,666.40 = 81,648,513.60 : x
  2. Step 2: Convert to fraction form
    172,631,212.80/258,521,666.40 = 81,648,513.60/x
  3. Step 3: Cross multiply
    172,631,212.80x = 258,521,666.40 × 81,648,513.60
  4. Step 4: Simplify right side
    172,631,212.80x = 21,107,909,794,955,060
  5. Step 5: Solve for x
    x = 21,107,909,794,955,060/172,631,212.80
  6. Step 6: Final answer
    x = 122,271,688.03

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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.