Home / 130,965.47-180,700.82-76,486.75

Finding the Fourth Proportional to 130,965.47, 180,700.82 and 76,486.75

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Solution

The fourth proportional to 130,965.47, 180,700.82 and 76,486.75 is: 105,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,965.47 : 180,700.82 = 76,486.75 : x
  2. Step 2: Convert to fraction form
    130,965.47/180,700.82 = 76,486.75/x
  3. Step 3: Cross multiply
    130,965.47x = 180,700.82 × 76,486.75
  4. Step 4: Simplify right side
    130,965.47x = 13,821,218,327.01
  5. Step 5: Solve for x
    x = 13,821,218,327.01/130,965.47
  6. Step 6: Final answer
    x = 105,533.30

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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.