Home / 136,089.89-204,131.95-72,931.49

Finding the Fourth Proportional to 136,089.89, 204,131.95 and 72,931.49

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Solution

The fourth proportional to 136,089.89, 204,131.95 and 72,931.49 is: 109,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,089.89 : 204,131.95 = 72,931.49 : x
  2. Step 2: Convert to fraction form
    136,089.89/204,131.95 = 72,931.49/x
  3. Step 3: Cross multiply
    136,089.89x = 204,131.95 × 72,931.49
  4. Step 4: Simplify right side
    136,089.89x = 14,887,646,067.12
  5. Step 5: Solve for x
    x = 14,887,646,067.12/136,089.89
  6. Step 6: Final answer
    x = 109,395.68

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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.