Home / 130,935.76-180,686.26-80,033.72

Finding the Fourth Proportional to 130,935.76, 180,686.26 and 80,033.72

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Solution

The fourth proportional to 130,935.76, 180,686.26 and 80,033.72 is: 110,443.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,935.76 : 180,686.26 = 80,033.72 : x
  2. Step 2: Convert to fraction form
    130,935.76/180,686.26 = 80,033.72/x
  3. Step 3: Cross multiply
    130,935.76x = 180,686.26 × 80,033.72
  4. Step 4: Simplify right side
    130,935.76x = 14,460,992,737.30
  5. Step 5: Solve for x
    x = 14,460,992,737.30/130,935.76
  6. Step 6: Final answer
    x = 110,443.42

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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.