Home / 212,355.71-293,057.85-121,728.83

Finding the Fourth Proportional to 212,355.71, 293,057.85 and 121,728.83

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Solution

The fourth proportional to 212,355.71, 293,057.85 and 121,728.83 is: 167,989.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,355.71 : 293,057.85 = 121,728.83 : x
  2. Step 2: Convert to fraction form
    212,355.71/293,057.85 = 121,728.83/x
  3. Step 3: Cross multiply
    212,355.71x = 293,057.85 × 121,728.83
  4. Step 4: Simplify right side
    212,355.71x = 35,673,587,509.28
  5. Step 5: Solve for x
    x = 35,673,587,509.28/212,355.71
  6. Step 6: Final answer
    x = 167,989.77

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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.