Home / 86,438.10-119,013.12-73,491.91

Finding the Fourth Proportional to 86,438.10, 119,013.12 and 73,491.91

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Solution

The fourth proportional to 86,438.10, 119,013.12 and 73,491.91 is: 101,188.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,438.10 : 119,013.12 = 73,491.91 : x
  2. Step 2: Convert to fraction form
    86,438.10/119,013.12 = 73,491.91/x
  3. Step 3: Cross multiply
    86,438.10x = 119,013.12 × 73,491.91
  4. Step 4: Simplify right side
    86,438.10x = 8,746,501,503.86
  5. Step 5: Solve for x
    x = 8,746,501,503.86/86,438.10
  6. Step 6: Final answer
    x = 101,188.04

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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.