Home / 115,503.04-159,393.72-65,201.68

Finding the Fourth Proportional to 115,503.04, 159,393.72 and 65,201.68

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Solution

The fourth proportional to 115,503.04, 159,393.72 and 65,201.68 is: 89,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,503.04 : 159,393.72 = 65,201.68 : x
  2. Step 2: Convert to fraction form
    115,503.04/159,393.72 = 65,201.68/x
  3. Step 3: Cross multiply
    115,503.04x = 159,393.72 × 65,201.68
  4. Step 4: Simplify right side
    115,503.04x = 10,392,738,325.45
  5. Step 5: Solve for x
    x = 10,392,738,325.45/115,503.04
  6. Step 6: Final answer
    x = 89,978.05

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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.