Home / 130,493.76-180,078.33-76,782.26

Finding the Fourth Proportional to 130,493.76, 180,078.33 and 76,782.26

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Solution

The fourth proportional to 130,493.76, 180,078.33 and 76,782.26 is: 105,957.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,493.76 : 180,078.33 = 76,782.26 : x
  2. Step 2: Convert to fraction form
    130,493.76/180,078.33 = 76,782.26/x
  3. Step 3: Cross multiply
    130,493.76x = 180,078.33 × 76,782.26
  4. Step 4: Simplify right side
    130,493.76x = 13,826,820,254.03
  5. Step 5: Solve for x
    x = 13,826,820,254.03/130,493.76
  6. Step 6: Final answer
    x = 105,957.71

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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.