Home / 172,437,112.80-258,655,669.20-155,431,000.80

Finding the Fourth Proportional to 172,437,112.80, 258,655,669.20 and 155,431,000.80

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Solution

The fourth proportional to 172,437,112.80, 258,655,669.20 and 155,431,000.80 is: 233,146,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,437,112.80 : 258,655,669.20 = 155,431,000.80 : x
  2. Step 2: Convert to fraction form
    172,437,112.80/258,655,669.20 = 155,431,000.80/x
  3. Step 3: Cross multiply
    172,437,112.80x = 258,655,669.20 × 155,431,000.80
  4. Step 4: Simplify right side
    172,437,112.80x = 40,203,109,526,349,736
  5. Step 5: Solve for x
    x = 40,203,109,526,349,736/172,437,112.80
  6. Step 6: Final answer
    x = 233,146,501.20

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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.