Home / 130,385.76-179,871.48-76,669.80

Finding the Fourth Proportional to 130,385.76, 179,871.48 and 76,669.80

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Solution

The fourth proportional to 130,385.76, 179,871.48 and 76,669.80 is: 105,768.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,385.76 : 179,871.48 = 76,669.80 : x
  2. Step 2: Convert to fraction form
    130,385.76/179,871.48 = 76,669.80/x
  3. Step 3: Cross multiply
    130,385.76x = 179,871.48 × 76,669.80
  4. Step 4: Simplify right side
    130,385.76x = 13,790,710,397.30
  5. Step 5: Solve for x
    x = 13,790,710,397.30/130,385.76
  6. Step 6: Final answer
    x = 105,768.53

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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.