Home / 212,722.09-293,571.01-129,971.50

Finding the Fourth Proportional to 212,722.09, 293,571.01 and 129,971.50

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Solution

The fourth proportional to 212,722.09, 293,571.01 and 129,971.50 is: 179,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,722.09 : 293,571.01 = 129,971.50 : x
  2. Step 2: Convert to fraction form
    212,722.09/293,571.01 = 129,971.50/x
  3. Step 3: Cross multiply
    212,722.09x = 293,571.01 × 129,971.50
  4. Step 4: Simplify right side
    212,722.09x = 38,155,865,057.77
  5. Step 5: Solve for x
    x = 38,155,865,057.77/212,722.09
  6. Step 6: Final answer
    x = 179,369.55

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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.