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Finding the Fourth Proportional to 119,756.40, 179,699.40 and 49,642.80

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Solution

The fourth proportional to 119,756.40, 179,699.40 and 49,642.80 is: 74,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,756.40 : 179,699.40 = 49,642.80 : x
  2. Step 2: Convert to fraction form
    119,756.40/179,699.40 = 49,642.80/x
  3. Step 3: Cross multiply
    119,756.40x = 179,699.40 × 49,642.80
  4. Step 4: Simplify right side
    119,756.40x = 8,920,781,374.32
  5. Step 5: Solve for x
    x = 8,920,781,374.32/119,756.40
  6. Step 6: Final answer
    x = 74,491.06

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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.