Home / 136,972.88-205,485.24-77,875.28

Finding the Fourth Proportional to 136,972.88, 205,485.24 and 77,875.28

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Solution

The fourth proportional to 136,972.88, 205,485.24 and 77,875.28 is: 116,827.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,972.88 : 205,485.24 = 77,875.28 : x
  2. Step 2: Convert to fraction form
    136,972.88/205,485.24 = 77,875.28/x
  3. Step 3: Cross multiply
    136,972.88x = 205,485.24 × 77,875.28
  4. Step 4: Simplify right side
    136,972.88x = 16,002,220,600.87
  5. Step 5: Solve for x
    x = 16,002,220,600.87/136,972.88
  6. Step 6: Final answer
    x = 116,827.66

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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.