Home / 115,440.24-159,262.56-77,739.60

Finding the Fourth Proportional to 115,440.24, 159,262.56 and 77,739.60

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Solution

The fourth proportional to 115,440.24, 159,262.56 and 77,739.60 is: 107,250.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,440.24 : 159,262.56 = 77,739.60 : x
  2. Step 2: Convert to fraction form
    115,440.24/159,262.56 = 77,739.60/x
  3. Step 3: Cross multiply
    115,440.24x = 159,262.56 × 77,739.60
  4. Step 4: Simplify right side
    115,440.24x = 12,381,007,709.38
  5. Step 5: Solve for x
    x = 12,381,007,709.38/115,440.24
  6. Step 6: Final answer
    x = 107,250.36

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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.