Home / 154,149.08-212,752.80-89,638.28

Finding the Fourth Proportional to 154,149.08, 212,752.80 and 89,638.28

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Solution

The fourth proportional to 154,149.08, 212,752.80 and 89,638.28 is: 123,716.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,149.08 : 212,752.80 = 89,638.28 : x
  2. Step 2: Convert to fraction form
    154,149.08/212,752.80 = 89,638.28/x
  3. Step 3: Cross multiply
    154,149.08x = 212,752.80 × 89,638.28
  4. Step 4: Simplify right side
    154,149.08x = 19,070,793,993.42
  5. Step 5: Solve for x
    x = 19,070,793,993.42/154,149.08
  6. Step 6: Final answer
    x = 123,716.56

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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.