Home / 130,486.55-180,054.63-76,751.96

Finding the Fourth Proportional to 130,486.55, 180,054.63 and 76,751.96

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Solution

The fourth proportional to 130,486.55, 180,054.63 and 76,751.96 is: 105,907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,486.55 : 180,054.63 = 76,751.96 : x
  2. Step 2: Convert to fraction form
    130,486.55/180,054.63 = 76,751.96/x
  3. Step 3: Cross multiply
    130,486.55x = 180,054.63 × 76,751.96
  4. Step 4: Simplify right side
    130,486.55x = 13,819,544,859.30
  5. Step 5: Solve for x
    x = 13,819,544,859.30/130,486.55
  6. Step 6: Final answer
    x = 105,907.81

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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.