Home / 130,407.78-180,073.05-82,745.70

Finding the Fourth Proportional to 130,407.78, 180,073.05 and 82,745.70

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Solution

The fourth proportional to 130,407.78, 180,073.05 and 82,745.70 is: 114,259.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,407.78 : 180,073.05 = 82,745.70 : x
  2. Step 2: Convert to fraction form
    130,407.78/180,073.05 = 82,745.70/x
  3. Step 3: Cross multiply
    130,407.78x = 180,073.05 × 82,745.70
  4. Step 4: Simplify right side
    130,407.78x = 14,900,270,573.39
  5. Step 5: Solve for x
    x = 14,900,270,573.39/130,407.78
  6. Step 6: Final answer
    x = 114,259.06

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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.