Home / 212,421.27-293,107.04-121,760.55

Finding the Fourth Proportional to 212,421.27, 293,107.04 and 121,760.55

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Solution

The fourth proportional to 212,421.27, 293,107.04 and 121,760.55 is: 168,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,421.27 : 293,107.04 = 121,760.55 : x
  2. Step 2: Convert to fraction form
    212,421.27/293,107.04 = 121,760.55/x
  3. Step 3: Cross multiply
    212,421.27x = 293,107.04 × 121,760.55
  4. Step 4: Simplify right side
    212,421.27x = 35,688,873,238.14
  5. Step 5: Solve for x
    x = 35,688,873,238.14/212,421.27
  6. Step 6: Final answer
    x = 168,009.89

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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.