Home / 130,293.90-179,809.98-76,578.15

Finding the Fourth Proportional to 130,293.90, 179,809.98 and 76,578.15

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Solution

The fourth proportional to 130,293.90, 179,809.98 and 76,578.15 is: 105,680.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,293.90 : 179,809.98 = 76,578.15 : x
  2. Step 2: Convert to fraction form
    130,293.90/179,809.98 = 76,578.15/x
  3. Step 3: Cross multiply
    130,293.90x = 179,809.98 × 76,578.15
  4. Step 4: Simplify right side
    130,293.90x = 13,769,515,619.94
  5. Step 5: Solve for x
    x = 13,769,515,619.94/130,293.90
  6. Step 6: Final answer
    x = 105,680.43

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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.