Home / 130,543.97-180,137.12-76,825.78

Finding the Fourth Proportional to 130,543.97, 180,137.12 and 76,825.78

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Solution

The fourth proportional to 130,543.97, 180,137.12 and 76,825.78 is: 106,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,543.97 : 180,137.12 = 76,825.78 : x
  2. Step 2: Convert to fraction form
    130,543.97/180,137.12 = 76,825.78/x
  3. Step 3: Cross multiply
    130,543.97x = 180,137.12 × 76,825.78
  4. Step 4: Simplify right side
    130,543.97x = 13,839,174,750.95
  5. Step 5: Solve for x
    x = 13,839,174,750.95/130,543.97
  6. Step 6: Final answer
    x = 106,011.60

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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.