Home / 135,140.12-186,498.63-89,739.83

Finding the Fourth Proportional to 135,140.12, 186,498.63 and 89,739.83

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Solution

The fourth proportional to 135,140.12, 186,498.63 and 89,739.83 is: 123,844.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,140.12 : 186,498.63 = 89,739.83 : x
  2. Step 2: Convert to fraction form
    135,140.12/186,498.63 = 89,739.83/x
  3. Step 3: Cross multiply
    135,140.12x = 186,498.63 × 89,739.83
  4. Step 4: Simplify right side
    135,140.12x = 16,736,354,418.94
  5. Step 5: Solve for x
    x = 16,736,354,418.94/135,140.12
  6. Step 6: Final answer
    x = 123,844.45

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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.