Home / 130,476.30-180,054.24-76,764.78

Finding the Fourth Proportional to 130,476.30, 180,054.24 and 76,764.78

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Solution

The fourth proportional to 130,476.30, 180,054.24 and 76,764.78 is: 105,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,476.30 : 180,054.24 = 76,764.78 : x
  2. Step 2: Convert to fraction form
    130,476.30/180,054.24 = 76,764.78/x
  3. Step 3: Cross multiply
    130,476.30x = 180,054.24 × 76,764.78
  4. Step 4: Simplify right side
    130,476.30x = 13,821,824,121.67
  5. Step 5: Solve for x
    x = 13,821,824,121.67/130,476.30
  6. Step 6: Final answer
    x = 105,933.60

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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.