Home / 130,211.10-195,316.65-85,887.90

Finding the Fourth Proportional to 130,211.10, 195,316.65 and 85,887.90

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Solution

The fourth proportional to 130,211.10, 195,316.65 and 85,887.90 is: 128,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,211.10 : 195,316.65 = 85,887.90 : x
  2. Step 2: Convert to fraction form
    130,211.10/195,316.65 = 85,887.90/x
  3. Step 3: Cross multiply
    130,211.10x = 195,316.65 × 85,887.90
  4. Step 4: Simplify right side
    130,211.10x = 16,775,336,903.54
  5. Step 5: Solve for x
    x = 16,775,336,903.54/130,211.10
  6. Step 6: Final answer
    x = 128,831.85

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.