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Finding the Fourth Proportional to 130,481.92, 180,065.12 and 70,865.92

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Solution

The fourth proportional to 130,481.92, 180,065.12 and 70,865.92 is: 97,795.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,481.92 : 180,065.12 = 70,865.92 : x
  2. Step 2: Convert to fraction form
    130,481.92/180,065.12 = 70,865.92/x
  3. Step 3: Cross multiply
    130,481.92x = 180,065.12 × 70,865.92
  4. Step 4: Simplify right side
    130,481.92x = 12,760,480,388.71
  5. Step 5: Solve for x
    x = 12,760,480,388.71/130,481.92
  6. Step 6: Final answer
    x = 97,795.01

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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.