Home / 129,628.63-178,887.57-70,012.63

Finding the Fourth Proportional to 129,628.63, 178,887.57 and 70,012.63

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Solution

The fourth proportional to 129,628.63, 178,887.57 and 70,012.63 is: 96,617.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.63 : 178,887.57 = 70,012.63 : x
  2. Step 2: Convert to fraction form
    129,628.63/178,887.57 = 70,012.63/x
  3. Step 3: Cross multiply
    129,628.63x = 178,887.57 × 70,012.63
  4. Step 4: Simplify right side
    129,628.63x = 12,524,389,250.01
  5. Step 5: Solve for x
    x = 12,524,389,250.01/129,628.63
  6. Step 6: Final answer
    x = 96,617.46

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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.