Home / 151,821.37-209,484.93-87,313.06

Finding the Fourth Proportional to 151,821.37, 209,484.93 and 87,313.06

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Solution

The fourth proportional to 151,821.37, 209,484.93 and 87,313.06 is: 120,475.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,821.37 : 209,484.93 = 87,313.06 : x
  2. Step 2: Convert to fraction form
    151,821.37/209,484.93 = 87,313.06/x
  3. Step 3: Cross multiply
    151,821.37x = 209,484.93 × 87,313.06
  4. Step 4: Simplify right side
    151,821.37x = 18,290,770,262.19
  5. Step 5: Solve for x
    x = 18,290,770,262.19/151,821.37
  6. Step 6: Final answer
    x = 120,475.60

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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.