Home / 145,022.70-200,133.05-87,665.21

Finding the Fourth Proportional to 145,022.70, 200,133.05 and 87,665.21

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Solution

The fourth proportional to 145,022.70, 200,133.05 and 87,665.21 is: 120,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,022.70 : 200,133.05 = 87,665.21 : x
  2. Step 2: Convert to fraction form
    145,022.70/200,133.05 = 87,665.21/x
  3. Step 3: Cross multiply
    145,022.70x = 200,133.05 × 87,665.21
  4. Step 4: Simplify right side
    145,022.70x = 17,544,706,470.25
  5. Step 5: Solve for x
    x = 17,544,706,470.25/145,022.70
  6. Step 6: Final answer
    x = 120,979.03

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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.