Home / 115,425.49-159,289.86-72,406.81

Finding the Fourth Proportional to 115,425.49, 159,289.86 and 72,406.81

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Solution

The fourth proportional to 115,425.49, 159,289.86 and 72,406.81 is: 99,923.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,425.49 : 159,289.86 = 72,406.81 : x
  2. Step 2: Convert to fraction form
    115,425.49/159,289.86 = 72,406.81/x
  3. Step 3: Cross multiply
    115,425.49x = 159,289.86 × 72,406.81
  4. Step 4: Simplify right side
    115,425.49x = 11,533,670,627.95
  5. Step 5: Solve for x
    x = 11,533,670,627.95/115,425.49
  6. Step 6: Final answer
    x = 99,923.08

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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.