Home / 126,020.70-188,812.35-81,624.60

Finding the Fourth Proportional to 126,020.70, 188,812.35 and 81,624.60

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Solution

The fourth proportional to 126,020.70, 188,812.35 and 81,624.60 is: 122,295.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,020.70 : 188,812.35 = 81,624.60 : x
  2. Step 2: Convert to fraction form
    126,020.70/188,812.35 = 81,624.60/x
  3. Step 3: Cross multiply
    126,020.70x = 188,812.35 × 81,624.60
  4. Step 4: Simplify right side
    126,020.70x = 15,411,732,543.81
  5. Step 5: Solve for x
    x = 15,411,732,543.81/126,020.70
  6. Step 6: Final answer
    x = 122,295.25

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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.