Home / 130,650.75-180,301.68-74,065.77

Finding the Fourth Proportional to 130,650.75, 180,301.68 and 74,065.77

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Solution

The fourth proportional to 130,650.75, 180,301.68 and 74,065.77 is: 102,212.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,650.75 : 180,301.68 = 74,065.77 : x
  2. Step 2: Convert to fraction form
    130,650.75/180,301.68 = 74,065.77/x
  3. Step 3: Cross multiply
    130,650.75x = 180,301.68 × 74,065.77
  4. Step 4: Simplify right side
    130,650.75x = 13,354,182,761.49
  5. Step 5: Solve for x
    x = 13,354,182,761.49/130,650.75
  6. Step 6: Final answer
    x = 102,212.83

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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.