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Finding the Fourth Proportional to 135,302.76, 186,714 and 74,875.92

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Solution

The fourth proportional to 135,302.76, 186,714 and 74,875.92 is: 103,326.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,302.76 : 186,714 = 74,875.92 : x
  2. Step 2: Convert to fraction form
    135,302.76/186,714 = 74,875.92/x
  3. Step 3: Cross multiply
    135,302.76x = 186,714 × 74,875.92
  4. Step 4: Simplify right side
    135,302.76x = 13,980,382,526.88
  5. Step 5: Solve for x
    x = 13,980,382,526.88/135,302.76
  6. Step 6: Final answer
    x = 103,326.66

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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.