Home / 130,489.64-180,033.60-76,787.85

Finding the Fourth Proportional to 130,489.64, 180,033.60 and 76,787.85

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Solution

The fourth proportional to 130,489.64, 180,033.60 and 76,787.85 is: 105,942.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,489.64 : 180,033.60 = 76,787.85 : x
  2. Step 2: Convert to fraction form
    130,489.64/180,033.60 = 76,787.85/x
  3. Step 3: Cross multiply
    130,489.64x = 180,033.60 × 76,787.85
  4. Step 4: Simplify right side
    130,489.64x = 13,824,393,071.76
  5. Step 5: Solve for x
    x = 13,824,393,071.76/130,489.64
  6. Step 6: Final answer
    x = 105,942.46

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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.