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Finding the Fourth Proportional to 105,943.60, 159,174.60 and 79,699.60

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Solution

The fourth proportional to 105,943.60, 159,174.60 and 79,699.60 is: 119,744.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,943.60 : 159,174.60 = 79,699.60 : x
  2. Step 2: Convert to fraction form
    105,943.60/159,174.60 = 79,699.60/x
  3. Step 3: Cross multiply
    105,943.60x = 159,174.60 × 79,699.60
  4. Step 4: Simplify right side
    105,943.60x = 12,686,151,950.16
  5. Step 5: Solve for x
    x = 12,686,151,950.16/105,943.60
  6. Step 6: Final answer
    x = 119,744.39

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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.