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Finding the Fourth Proportional to 154,713.10, 213,488.04 and 91,047.10

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Solution

The fourth proportional to 154,713.10, 213,488.04 and 91,047.10 is: 125,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,713.10 : 213,488.04 = 91,047.10 : x
  2. Step 2: Convert to fraction form
    154,713.10/213,488.04 = 91,047.10/x
  3. Step 3: Cross multiply
    154,713.10x = 213,488.04 × 91,047.10
  4. Step 4: Simplify right side
    154,713.10x = 19,437,466,926.68
  5. Step 5: Solve for x
    x = 19,437,466,926.68/154,713.10
  6. Step 6: Final answer
    x = 125,635.56

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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.