Home / 138,125.92-190,608.24-77,697.76

Finding the Fourth Proportional to 138,125.92, 190,608.24 and 77,697.76

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Solution

The fourth proportional to 138,125.92, 190,608.24 and 77,697.76 is: 107,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,125.92 : 190,608.24 = 77,697.76 : x
  2. Step 2: Convert to fraction form
    138,125.92/190,608.24 = 77,697.76/x
  3. Step 3: Cross multiply
    138,125.92x = 190,608.24 × 77,697.76
  4. Step 4: Simplify right side
    138,125.92x = 14,809,833,285.54
  5. Step 5: Solve for x
    x = 14,809,833,285.54/138,125.92
  6. Step 6: Final answer
    x = 107,219.80

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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.