Home / 130,172.70-195,210.45-90,612.30

Finding the Fourth Proportional to 130,172.70, 195,210.45 and 90,612.30

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Solution

The fourth proportional to 130,172.70, 195,210.45 and 90,612.30 is: 135,884.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,172.70 : 195,210.45 = 90,612.30 : x
  2. Step 2: Convert to fraction form
    130,172.70/195,210.45 = 90,612.30/x
  3. Step 3: Cross multiply
    130,172.70x = 195,210.45 × 90,612.30
  4. Step 4: Simplify right side
    130,172.70x = 17,688,467,858.54
  5. Step 5: Solve for x
    x = 17,688,467,858.54/130,172.70
  6. Step 6: Final answer
    x = 135,884.62

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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.