Home / 129,003.50-178,024.14-70,861.38

Finding the Fourth Proportional to 129,003.50, 178,024.14 and 70,861.38

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Solution

The fourth proportional to 129,003.50, 178,024.14 and 70,861.38 is: 97,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,003.50 : 178,024.14 = 70,861.38 : x
  2. Step 2: Convert to fraction form
    129,003.50/178,024.14 = 70,861.38/x
  3. Step 3: Cross multiply
    129,003.50x = 178,024.14 × 70,861.38
  4. Step 4: Simplify right side
    129,003.50x = 12,615,036,366.58
  5. Step 5: Solve for x
    x = 12,615,036,366.58/129,003.50
  6. Step 6: Final answer
    x = 97,788.33

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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.