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Finding the Fourth Proportional to 129,610.63, 178,862.66 and 69,994.63

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Solution

The fourth proportional to 129,610.63, 178,862.66 and 69,994.63 is: 96,592.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,610.63 : 178,862.66 = 69,994.63 : x
  2. Step 2: Convert to fraction form
    129,610.63/178,862.66 = 69,994.63/x
  3. Step 3: Cross multiply
    129,610.63x = 178,862.66 × 69,994.63
  4. Step 4: Simplify right side
    129,610.63x = 12,519,425,707.52
  5. Step 5: Solve for x
    x = 12,519,425,707.52/129,610.63
  6. Step 6: Final answer
    x = 96,592.58

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1.5x scale

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.