Home / 130,708.72-180,383.16-74,131.12

Finding the Fourth Proportional to 130,708.72, 180,383.16 and 74,131.12

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Solution

The fourth proportional to 130,708.72, 180,383.16 and 74,131.12 is: 102,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,708.72 : 180,383.16 = 74,131.12 : x
  2. Step 2: Convert to fraction form
    130,708.72/180,383.16 = 74,131.12/x
  3. Step 3: Cross multiply
    130,708.72x = 180,383.16 × 74,131.12
  4. Step 4: Simplify right side
    130,708.72x = 13,372,005,679.94
  5. Step 5: Solve for x
    x = 13,372,005,679.94/130,708.72
  6. Step 6: Final answer
    x = 102,303.85

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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.