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Finding the Fourth Proportional to 133,063.40, 199,633.35 and 76,943.72

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Solution

The fourth proportional to 133,063.40, 199,633.35 and 76,943.72 is: 115,437.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,063.40 : 199,633.35 = 76,943.72 : x
  2. Step 2: Convert to fraction form
    133,063.40/199,633.35 = 76,943.72/x
  3. Step 3: Cross multiply
    133,063.40x = 199,633.35 × 76,943.72
  4. Step 4: Simplify right side
    133,063.40x = 15,360,532,585.06
  5. Step 5: Solve for x
    x = 15,360,532,585.06/133,063.40
  6. Step 6: Final answer
    x = 115,437.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.