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Finding the Fourth Proportional to 141,874.40, 212,714.40 and 67,030.40

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Solution

The fourth proportional to 141,874.40, 212,714.40 and 67,030.40 is: 100,499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,874.40 : 212,714.40 = 67,030.40 : x
  2. Step 2: Convert to fraction form
    141,874.40/212,714.40 = 67,030.40/x
  3. Step 3: Cross multiply
    141,874.40x = 212,714.40 × 67,030.40
  4. Step 4: Simplify right side
    141,874.40x = 14,258,331,317.76
  5. Step 5: Solve for x
    x = 14,258,331,317.76/141,874.40
  6. Step 6: Final answer
    x = 100,499.68

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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.