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Finding the Fourth Proportional to 154,707.66, 213,485.49 and 91,036.80

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Solution

The fourth proportional to 154,707.66, 213,485.49 and 91,036.80 is: 125,624.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,707.66 : 213,485.49 = 91,036.80 : x
  2. Step 2: Convert to fraction form
    154,707.66/213,485.49 = 91,036.80/x
  3. Step 3: Cross multiply
    154,707.66x = 213,485.49 × 91,036.80
  4. Step 4: Simplify right side
    154,707.66x = 19,435,035,856.03
  5. Step 5: Solve for x
    x = 19,435,035,856.03/154,707.66
  6. Step 6: Final answer
    x = 125,624.26

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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.