Home / 148,509.18-222,231.62-128,587.38

Finding the Fourth Proportional to 148,509.18, 222,231.62 and 128,587.38

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Solution

The fourth proportional to 148,509.18, 222,231.62 and 128,587.38 is: 192,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,509.18 : 222,231.62 = 128,587.38 : x
  2. Step 2: Convert to fraction form
    148,509.18/222,231.62 = 128,587.38/x
  3. Step 3: Cross multiply
    148,509.18x = 222,231.62 × 128,587.38
  4. Step 4: Simplify right side
    148,509.18x = 28,576,181,768.96
  5. Step 5: Solve for x
    x = 28,576,181,768.96/148,509.18
  6. Step 6: Final answer
    x = 192,420.31

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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.