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Finding the Fourth Proportional to 141,812.70, 212,719.05 and 89,454.30

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Solution

The fourth proportional to 141,812.70, 212,719.05 and 89,454.30 is: 134,181.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,812.70 : 212,719.05 = 89,454.30 : x
  2. Step 2: Convert to fraction form
    141,812.70/212,719.05 = 89,454.30/x
  3. Step 3: Cross multiply
    141,812.70x = 212,719.05 × 89,454.30
  4. Step 4: Simplify right side
    141,812.70x = 19,028,633,714.42
  5. Step 5: Solve for x
    x = 19,028,633,714.42/141,812.70
  6. Step 6: Final answer
    x = 134,181.45

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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.