Home / 161,905.37-223,430.38-90,289.91

Finding the Fourth Proportional to 161,905.37, 223,430.38 and 90,289.91

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Solution

The fourth proportional to 161,905.37, 223,430.38 and 90,289.91 is: 124,600.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,905.37 : 223,430.38 = 90,289.91 : x
  2. Step 2: Convert to fraction form
    161,905.37/223,430.38 = 90,289.91/x
  3. Step 3: Cross multiply
    161,905.37x = 223,430.38 × 90,289.91
  4. Step 4: Simplify right side
    161,905.37x = 20,173,509,234.32
  5. Step 5: Solve for x
    x = 20,173,509,234.32/161,905.37
  6. Step 6: Final answer
    x = 124,600.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.