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Finding the Fourth Proportional to 135,055.82, 186,402.81 and 89,034.71

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Solution

The fourth proportional to 135,055.82, 186,402.81 and 89,034.71 is: 122,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,055.82 : 186,402.81 = 89,034.71 : x
  2. Step 2: Convert to fraction form
    135,055.82/186,402.81 = 89,034.71/x
  3. Step 3: Cross multiply
    135,055.82x = 186,402.81 × 89,034.71
  4. Step 4: Simplify right side
    135,055.82x = 16,596,319,199.52
  5. Step 5: Solve for x
    x = 16,596,319,199.52/135,055.82
  6. Step 6: Final answer
    x = 122,884.89

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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.