Home / 129,629.63-178,888.95-70,013.63

Finding the Fourth Proportional to 129,629.63, 178,888.95 and 70,013.63

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Solution

The fourth proportional to 129,629.63, 178,888.95 and 70,013.63 is: 96,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,629.63 : 178,888.95 = 70,013.63 : x
  2. Step 2: Convert to fraction form
    129,629.63/178,888.95 = 70,013.63/x
  3. Step 3: Cross multiply
    129,629.63x = 178,888.95 × 70,013.63
  4. Step 4: Simplify right side
    129,629.63x = 12,524,664,756.39
  5. Step 5: Solve for x
    x = 12,524,664,756.39/129,629.63
  6. Step 6: Final answer
    x = 96,618.84

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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.