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Finding the Fourth Proportional to 186,988.77, 280,585.21 and 108,256.77

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Solution

The fourth proportional to 186,988.77, 280,585.21 and 108,256.77 is: 162,444.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,988.77 : 280,585.21 = 108,256.77 : x
  2. Step 2: Convert to fraction form
    186,988.77/280,585.21 = 108,256.77/x
  3. Step 3: Cross multiply
    186,988.77x = 280,585.21 × 108,256.77
  4. Step 4: Simplify right side
    186,988.77x = 30,375,248,544.37
  5. Step 5: Solve for x
    x = 30,375,248,544.37/186,988.77
  6. Step 6: Final answer
    x = 162,444.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.