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Finding the Fourth Proportional to 134,602.43, 185,748.80 and 74,178.65

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Solution

The fourth proportional to 134,602.43, 185,748.80 and 74,178.65 is: 102,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,602.43 : 185,748.80 = 74,178.65 : x
  2. Step 2: Convert to fraction form
    134,602.43/185,748.80 = 74,178.65/x
  3. Step 3: Cross multiply
    134,602.43x = 185,748.80 × 74,178.65
  4. Step 4: Simplify right side
    134,602.43x = 13,778,595,316.60
  5. Step 5: Solve for x
    x = 13,778,595,316.60/134,602.43
  6. Step 6: Final answer
    x = 102,365.13

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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.