Home / 154,147.11-212,750.09-89,636.31

Finding the Fourth Proportional to 154,147.11, 212,750.09 and 89,636.31

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Solution

The fourth proportional to 154,147.11, 212,750.09 and 89,636.31 is: 123,713.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,147.11 : 212,750.09 = 89,636.31 : x
  2. Step 2: Convert to fraction form
    154,147.11/212,750.09 = 89,636.31/x
  3. Step 3: Cross multiply
    154,147.11x = 212,750.09 × 89,636.31
  4. Step 4: Simplify right side
    154,147.11x = 19,070,132,571.59
  5. Step 5: Solve for x
    x = 19,070,132,571.59/154,147.11
  6. Step 6: Final answer
    x = 123,713.85

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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.