Home / 130,738.92-180,418.02-71,122.92

Finding the Fourth Proportional to 130,738.92, 180,418.02 and 71,122.92

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Solution

The fourth proportional to 130,738.92, 180,418.02 and 71,122.92 is: 98,148.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,738.92 : 180,418.02 = 71,122.92 : x
  2. Step 2: Convert to fraction form
    130,738.92/180,418.02 = 71,122.92/x
  3. Step 3: Cross multiply
    130,738.92x = 180,418.02 × 71,122.92
  4. Step 4: Simplify right side
    130,738.92x = 12,831,856,403.02
  5. Step 5: Solve for x
    x = 12,831,856,403.02/130,738.92
  6. Step 6: Final answer
    x = 98,148.71

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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.