Home / 212,420.11-293,105.45-121,759.39

Finding the Fourth Proportional to 212,420.11, 293,105.45 and 121,759.39

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Solution

The fourth proportional to 212,420.11, 293,105.45 and 121,759.39 is: 168,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,420.11 : 293,105.45 = 121,759.39 : x
  2. Step 2: Convert to fraction form
    212,420.11/293,105.45 = 121,759.39/x
  3. Step 3: Cross multiply
    212,420.11x = 293,105.45 × 121,759.39
  4. Step 4: Simplify right side
    212,420.11x = 35,688,341,164.06
  5. Step 5: Solve for x
    x = 35,688,341,164.06/212,420.11
  6. Step 6: Final answer
    x = 168,008.30

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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.