Home / 130,940.78-180,693.48-80,038.76

Finding the Fourth Proportional to 130,940.78, 180,693.48 and 80,038.76

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Solution

The fourth proportional to 130,940.78, 180,693.48 and 80,038.76 is: 110,450.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,940.78 : 180,693.48 = 80,038.76 : x
  2. Step 2: Convert to fraction form
    130,940.78/180,693.48 = 80,038.76/x
  3. Step 3: Cross multiply
    130,940.78x = 180,693.48 × 80,038.76
  4. Step 4: Simplify right side
    130,940.78x = 14,462,482,079.28
  5. Step 5: Solve for x
    x = 14,462,482,079.28/130,940.78
  6. Step 6: Final answer
    x = 110,450.56

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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.