Home / 212,322.98-292,972.25-121,661.51

Finding the Fourth Proportional to 212,322.98, 292,972.25 and 121,661.51

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Solution

The fourth proportional to 212,322.98, 292,972.25 and 121,661.51 is: 167,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,322.98 : 292,972.25 = 121,661.51 : x
  2. Step 2: Convert to fraction form
    212,322.98/292,972.25 = 121,661.51/x
  3. Step 3: Cross multiply
    212,322.98x = 292,972.25 × 121,661.51
  4. Step 4: Simplify right side
    212,322.98x = 35,643,444,249.93
  5. Step 5: Solve for x
    x = 35,643,444,249.93/212,322.98
  6. Step 6: Final answer
    x = 167,873.70

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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.