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Finding the Fourth Proportional to 129,854.63, 179,210.33 and 73,276.94

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Solution

The fourth proportional to 129,854.63, 179,210.33 and 73,276.94 is: 101,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,854.63 : 179,210.33 = 73,276.94 : x
  2. Step 2: Convert to fraction form
    129,854.63/179,210.33 = 73,276.94/x
  3. Step 3: Cross multiply
    129,854.63x = 179,210.33 × 73,276.94
  4. Step 4: Simplify right side
    129,854.63x = 13,131,983,336.35
  5. Step 5: Solve for x
    x = 13,131,983,336.35/129,854.63
  6. Step 6: Final answer
    x = 101,128.35

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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.