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Finding the Fourth Proportional to 103,883.88, 143,359.80 and 56,137.23

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Solution

The fourth proportional to 103,883.88, 143,359.80 and 56,137.23 is: 77,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,883.88 : 143,359.80 = 56,137.23 : x
  2. Step 2: Convert to fraction form
    103,883.88/143,359.80 = 56,137.23/x
  3. Step 3: Cross multiply
    103,883.88x = 143,359.80 × 56,137.23
  4. Step 4: Simplify right side
    103,883.88x = 8,047,822,065.35
  5. Step 5: Solve for x
    x = 8,047,822,065.35/103,883.88
  6. Step 6: Final answer
    x = 77,469.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.