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Finding the Fourth Proportional to 154,322.70, 212,918.67 and 90,624.30

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Solution

The fourth proportional to 154,322.70, 212,918.67 and 90,624.30 is: 125,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,322.70 : 212,918.67 = 90,624.30 : x
  2. Step 2: Convert to fraction form
    154,322.70/212,918.67 = 90,624.30/x
  3. Step 3: Cross multiply
    154,322.70x = 212,918.67 × 90,624.30
  4. Step 4: Simplify right side
    154,322.70x = 19,295,605,425.68
  5. Step 5: Solve for x
    x = 19,295,605,425.68/154,322.70
  6. Step 6: Final answer
    x = 125,034.14

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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.