Home / 130,809.23-180,535.07-76,379.21

Finding the Fourth Proportional to 130,809.23, 180,535.07 and 76,379.21

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Solution

The fourth proportional to 130,809.23, 180,535.07 and 76,379.21 is: 105,414.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,809.23 : 180,535.07 = 76,379.21 : x
  2. Step 2: Convert to fraction form
    130,809.23/180,535.07 = 76,379.21/x
  3. Step 3: Cross multiply
    130,809.23x = 180,535.07 × 76,379.21
  4. Step 4: Simplify right side
    130,809.23x = 13,789,126,023.89
  5. Step 5: Solve for x
    x = 13,789,126,023.89/130,809.23
  6. Step 6: Final answer
    x = 105,414.01

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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.