Home / 172,001.90-258,002.85-83,428.40

Finding the Fourth Proportional to 172,001.90, 258,002.85 and 83,428.40

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Solution

The fourth proportional to 172,001.90, 258,002.85 and 83,428.40 is: 125,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,001.90 : 258,002.85 = 83,428.40 : x
  2. Step 2: Convert to fraction form
    172,001.90/258,002.85 = 83,428.40/x
  3. Step 3: Cross multiply
    172,001.90x = 258,002.85 × 83,428.40
  4. Step 4: Simplify right side
    172,001.90x = 21,524,764,970.94
  5. Step 5: Solve for x
    x = 21,524,764,970.94/172,001.90
  6. Step 6: Final answer
    x = 125,142.60

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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.