Home / 141,878.20-212,817.30-129,897.40

Finding the Fourth Proportional to 141,878.20, 212,817.30 and 129,897.40

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Solution

The fourth proportional to 141,878.20, 212,817.30 and 129,897.40 is: 194,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,878.20 : 212,817.30 = 129,897.40 : x
  2. Step 2: Convert to fraction form
    141,878.20/212,817.30 = 129,897.40/x
  3. Step 3: Cross multiply
    141,878.20x = 212,817.30 × 129,897.40
  4. Step 4: Simplify right side
    141,878.20x = 27,644,413,945.02
  5. Step 5: Solve for x
    x = 27,644,413,945.02/141,878.20
  6. Step 6: Final answer
    x = 194,846.10

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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.