Home / 138,167.89-190,658.07-77,737.19

Finding the Fourth Proportional to 138,167.89, 190,658.07 and 77,737.19

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Solution

The fourth proportional to 138,167.89, 190,658.07 and 77,737.19 is: 107,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,167.89 : 190,658.07 = 77,737.19 : x
  2. Step 2: Convert to fraction form
    138,167.89/190,658.07 = 77,737.19/x
  3. Step 3: Cross multiply
    138,167.89x = 190,658.07 × 77,737.19
  4. Step 4: Simplify right side
    138,167.89x = 14,821,223,089.27
  5. Step 5: Solve for x
    x = 14,821,223,089.27/138,167.89
  6. Step 6: Final answer
    x = 107,269.67

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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.