Home / 105,379.12-157,893.18-74,148.76

Finding the Fourth Proportional to 105,379.12, 157,893.18 and 74,148.76

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Solution

The fourth proportional to 105,379.12, 157,893.18 and 74,148.76 is: 111,099.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,379.12 : 157,893.18 = 74,148.76 : x
  2. Step 2: Convert to fraction form
    105,379.12/157,893.18 = 74,148.76/x
  3. Step 3: Cross multiply
    105,379.12x = 157,893.18 × 74,148.76
  4. Step 4: Simplify right side
    105,379.12x = 11,707,583,509.46
  5. Step 5: Solve for x
    x = 11,707,583,509.46/105,379.12
  6. Step 6: Final answer
    x = 111,099.65

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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.