Home / 154,029.14-212,422.07-128,272.97

Finding the Fourth Proportional to 154,029.14, 212,422.07 and 128,272.97

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Solution

The fourth proportional to 154,029.14, 212,422.07 and 128,272.97 is: 176,901.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,029.14 : 212,422.07 = 128,272.97 : x
  2. Step 2: Convert to fraction form
    154,029.14/212,422.07 = 128,272.97/x
  3. Step 3: Cross multiply
    154,029.14x = 212,422.07 × 128,272.97
  4. Step 4: Simplify right side
    154,029.14x = 27,248,008,429.66
  5. Step 5: Solve for x
    x = 27,248,008,429.66/154,029.14
  6. Step 6: Final answer
    x = 176,901.64

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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.