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Finding the Fourth Proportional to 141,887.20, 212,830.80 and 57,647.20

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Solution

The fourth proportional to 141,887.20, 212,830.80 and 57,647.20 is: 86,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,887.20 : 212,830.80 = 57,647.20 : x
  2. Step 2: Convert to fraction form
    141,887.20/212,830.80 = 57,647.20/x
  3. Step 3: Cross multiply
    141,887.20x = 212,830.80 × 57,647.20
  4. Step 4: Simplify right side
    141,887.20x = 12,269,099,693.76
  5. Step 5: Solve for x
    x = 12,269,099,693.76/141,887.20
  6. Step 6: Final answer
    x = 86,470.80

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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.