Home / 130,474.30-180,051.49-76,762.78

Finding the Fourth Proportional to 130,474.30, 180,051.49 and 76,762.78

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Solution

The fourth proportional to 130,474.30, 180,051.49 and 76,762.78 is: 105,930.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,474.30 : 180,051.49 = 76,762.78 : x
  2. Step 2: Convert to fraction form
    130,474.30/180,051.49 = 76,762.78/x
  3. Step 3: Cross multiply
    130,474.30x = 180,051.49 × 76,762.78
  4. Step 4: Simplify right side
    130,474.30x = 13,821,252,915.54
  5. Step 5: Solve for x
    x = 13,821,252,915.54/130,474.30
  6. Step 6: Final answer
    x = 105,930.85

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1.5x scale

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.