Home / 130,678.75-180,308.86-76,944.16

Finding the Fourth Proportional to 130,678.75, 180,308.86 and 76,944.16

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Solution

The fourth proportional to 130,678.75, 180,308.86 and 76,944.16 is: 106,166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,678.75 : 180,308.86 = 76,944.16 : x
  2. Step 2: Convert to fraction form
    130,678.75/180,308.86 = 76,944.16/x
  3. Step 3: Cross multiply
    130,678.75x = 180,308.86 × 76,944.16
  4. Step 4: Simplify right side
    130,678.75x = 13,873,713,773.26
  5. Step 5: Solve for x
    x = 13,873,713,773.26/130,678.75
  6. Step 6: Final answer
    x = 106,166.56

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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.