Home / 212,417.11-293,101.31-121,756.39

Finding the Fourth Proportional to 212,417.11, 293,101.31 and 121,756.39

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Solution

The fourth proportional to 212,417.11, 293,101.31 and 121,756.39 is: 168,004.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,417.11 : 293,101.31 = 121,756.39 : x
  2. Step 2: Convert to fraction form
    212,417.11/293,101.31 = 121,756.39/x
  3. Step 3: Cross multiply
    212,417.11x = 293,101.31 × 121,756.39
  4. Step 4: Simplify right side
    212,417.11x = 35,686,957,409.87
  5. Step 5: Solve for x
    x = 35,686,957,409.87/212,417.11
  6. Step 6: Final answer
    x = 168,004.16

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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.