Home / 130,717.12-180,383.04-74,133.76

Finding the Fourth Proportional to 130,717.12, 180,383.04 and 74,133.76

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Solution

The fourth proportional to 130,717.12, 180,383.04 and 74,133.76 is: 102,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,717.12 : 180,383.04 = 74,133.76 : x
  2. Step 2: Convert to fraction form
    130,717.12/180,383.04 = 74,133.76/x
  3. Step 3: Cross multiply
    130,717.12x = 180,383.04 × 74,133.76
  4. Step 4: Simplify right side
    130,717.12x = 13,372,472,995.43
  5. Step 5: Solve for x
    x = 13,372,472,995.43/130,717.12
  6. Step 6: Final answer
    x = 102,300.85

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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.