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Finding the Fourth Proportional to 129,752.09, 179,062.30 and 75,300.06

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Solution

The fourth proportional to 129,752.09, 179,062.30 and 75,300.06 is: 103,916.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,752.09 : 179,062.30 = 75,300.06 : x
  2. Step 2: Convert to fraction form
    129,752.09/179,062.30 = 75,300.06/x
  3. Step 3: Cross multiply
    129,752.09x = 179,062.30 × 75,300.06
  4. Step 4: Simplify right side
    129,752.09x = 13,483,401,933.74
  5. Step 5: Solve for x
    x = 13,483,401,933.74/129,752.09
  6. Step 6: Final answer
    x = 103,916.65

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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.