Home / 134,957.67-186,264.32-78,401.85

Finding the Fourth Proportional to 134,957.67, 186,264.32 and 78,401.85

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Solution

The fourth proportional to 134,957.67, 186,264.32 and 78,401.85 is: 108,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,957.67 : 186,264.32 = 78,401.85 : x
  2. Step 2: Convert to fraction form
    134,957.67/186,264.32 = 78,401.85/x
  3. Step 3: Cross multiply
    134,957.67x = 186,264.32 × 78,401.85
  4. Step 4: Simplify right side
    134,957.67x = 14,603,467,276.99
  5. Step 5: Solve for x
    x = 14,603,467,276.99/134,957.67
  6. Step 6: Final answer
    x = 108,207.76

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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.