Home / 130,628.37-180,305.42-85,313.39

Finding the Fourth Proportional to 130,628.37, 180,305.42 and 85,313.39

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Solution

The fourth proportional to 130,628.37, 180,305.42 and 85,313.39 is: 117,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,628.37 : 180,305.42 = 85,313.39 : x
  2. Step 2: Convert to fraction form
    130,628.37/180,305.42 = 85,313.39/x
  3. Step 3: Cross multiply
    130,628.37x = 180,305.42 × 85,313.39
  4. Step 4: Simplify right side
    130,628.37x = 15,382,466,639.77
  5. Step 5: Solve for x
    x = 15,382,466,639.77/130,628.37
  6. Step 6: Final answer
    x = 117,757.47

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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.