Home / 172,001.80-258,002.70-83,428.30

Finding the Fourth Proportional to 172,001.80, 258,002.70 and 83,428.30

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Solution

The fourth proportional to 172,001.80, 258,002.70 and 83,428.30 is: 125,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,001.80 : 258,002.70 = 83,428.30 : x
  2. Step 2: Convert to fraction form
    172,001.80/258,002.70 = 83,428.30/x
  3. Step 3: Cross multiply
    172,001.80x = 258,002.70 × 83,428.30
  4. Step 4: Simplify right side
    172,001.80x = 21,524,726,656.41
  5. Step 5: Solve for x
    x = 21,524,726,656.41/172,001.80
  6. Step 6: Final answer
    x = 125,142.45

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1.5x scale

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.