Home / 154,531.28-213,228.81-90,011.14

Finding the Fourth Proportional to 154,531.28, 213,228.81 and 90,011.14

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Solution

The fourth proportional to 154,531.28, 213,228.81 and 90,011.14 is: 124,201.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,531.28 : 213,228.81 = 90,011.14 : x
  2. Step 2: Convert to fraction form
    154,531.28/213,228.81 = 90,011.14/x
  3. Step 3: Cross multiply
    154,531.28x = 213,228.81 × 90,011.14
  4. Step 4: Simplify right side
    154,531.28x = 19,192,968,268.94
  5. Step 5: Solve for x
    x = 19,192,968,268.94/154,531.28
  6. Step 6: Final answer
    x = 124,201.19

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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.