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Finding the Fourth Proportional to 141,989.94, 212,872.68 and 70,876.08

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Solution

The fourth proportional to 141,989.94, 212,872.68 and 70,876.08 is: 106,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,989.94 : 212,872.68 = 70,876.08 : x
  2. Step 2: Convert to fraction form
    141,989.94/212,872.68 = 70,876.08/x
  3. Step 3: Cross multiply
    141,989.94x = 212,872.68 × 70,876.08
  4. Step 4: Simplify right side
    141,989.94x = 15,087,581,097.49
  5. Step 5: Solve for x
    x = 15,087,581,097.49/141,989.94
  6. Step 6: Final answer
    x = 106,258.10

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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.