Home / 212,589.50-293,347.95-121,940.78

Finding the Fourth Proportional to 212,589.50, 293,347.95 and 121,940.78

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Solution

The fourth proportional to 212,589.50, 293,347.95 and 121,940.78 is: 168,263.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,589.50 : 293,347.95 = 121,940.78 : x
  2. Step 2: Convert to fraction form
    212,589.50/293,347.95 = 121,940.78/x
  3. Step 3: Cross multiply
    212,589.50x = 293,347.95 × 121,940.78
  4. Step 4: Simplify right side
    212,589.50x = 35,771,077,834.40
  5. Step 5: Solve for x
    x = 35,771,077,834.40/212,589.50
  6. Step 6: Final answer
    x = 168,263.62

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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.