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Finding the Fourth Proportional to 104,103.70, 143,661.40 and 56,356.63

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Solution

The fourth proportional to 104,103.70, 143,661.40 and 56,356.63 is: 77,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,103.70 : 143,661.40 = 56,356.63 : x
  2. Step 2: Convert to fraction form
    104,103.70/143,661.40 = 56,356.63/x
  3. Step 3: Cross multiply
    104,103.70x = 143,661.40 × 56,356.63
  4. Step 4: Simplify right side
    104,103.70x = 8,096,272,365.08
  5. Step 5: Solve for x
    x = 8,096,272,365.08/104,103.70
  6. Step 6: Final answer
    x = 77,771.23

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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.