Home / 139,421.48-209,132.91-34,240.46

Finding the Fourth Proportional to 139,421.48, 209,132.91 and 34,240.46

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Solution

The fourth proportional to 139,421.48, 209,132.91 and 34,240.46 is: 51,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,421.48 : 209,132.91 = 34,240.46 : x
  2. Step 2: Convert to fraction form
    139,421.48/209,132.91 = 34,240.46/x
  3. Step 3: Cross multiply
    139,421.48x = 209,132.91 × 34,240.46
  4. Step 4: Simplify right side
    139,421.48x = 7,160,805,993.87
  5. Step 5: Solve for x
    x = 7,160,805,993.87/139,421.48
  6. Step 6: Final answer
    x = 51,360.85

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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.