Home / 153,903.20-212,326.09-89,361.42

Finding the Fourth Proportional to 153,903.20, 212,326.09 and 89,361.42

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Solution

The fourth proportional to 153,903.20, 212,326.09 and 89,361.42 is: 123,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,903.20 : 212,326.09 = 89,361.42 : x
  2. Step 2: Convert to fraction form
    153,903.20/212,326.09 = 89,361.42/x
  3. Step 3: Cross multiply
    153,903.20x = 212,326.09 × 89,361.42
  4. Step 4: Simplify right side
    153,903.20x = 18,973,760,682.04
  5. Step 5: Solve for x
    x = 18,973,760,682.04/153,903.20
  6. Step 6: Final answer
    x = 123,283.73

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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.