Home / 205,125.80-307,688.70-172,466.60

Finding the Fourth Proportional to 205,125.80, 307,688.70 and 172,466.60

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Solution

The fourth proportional to 205,125.80, 307,688.70 and 172,466.60 is: 258,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,125.80 : 307,688.70 = 172,466.60 : x
  2. Step 2: Convert to fraction form
    205,125.80/307,688.70 = 172,466.60/x
  3. Step 3: Cross multiply
    205,125.80x = 307,688.70 × 172,466.60
  4. Step 4: Simplify right side
    205,125.80x = 53,066,023,947.42
  5. Step 5: Solve for x
    x = 53,066,023,947.42/205,125.80
  6. Step 6: Final answer
    x = 258,699.90

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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.