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Finding the Fourth Proportional to 141,620.40, 212,430.60 and 129,810.60

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Solution

The fourth proportional to 141,620.40, 212,430.60 and 129,810.60 is: 194,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,620.40 : 212,430.60 = 129,810.60 : x
  2. Step 2: Convert to fraction form
    141,620.40/212,430.60 = 129,810.60/x
  3. Step 3: Cross multiply
    141,620.40x = 212,430.60 × 129,810.60
  4. Step 4: Simplify right side
    141,620.40x = 27,575,743,644.36
  5. Step 5: Solve for x
    x = 27,575,743,644.36/141,620.40
  6. Step 6: Final answer
    x = 194,715.90

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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.