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Finding the Fourth Proportional to 187,668.56, 258,988.84 and 102,790.32

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Solution

The fourth proportional to 187,668.56, 258,988.84 and 102,790.32 is: 141,854.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,668.56 : 258,988.84 = 102,790.32 : x
  2. Step 2: Convert to fraction form
    187,668.56/258,988.84 = 102,790.32/x
  3. Step 3: Cross multiply
    187,668.56x = 258,988.84 × 102,790.32
  4. Step 4: Simplify right side
    187,668.56x = 26,621,545,740.03
  5. Step 5: Solve for x
    x = 26,621,545,740.03/187,668.56
  6. Step 6: Final answer
    x = 141,854.05

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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.