Home / 140,369.47-193,719.08-79,130.77

Finding the Fourth Proportional to 140,369.47, 193,719.08 and 79,130.77

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Solution

The fourth proportional to 140,369.47, 193,719.08 and 79,130.77 is: 109,205.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,369.47 : 193,719.08 = 79,130.77 : x
  2. Step 2: Convert to fraction form
    140,369.47/193,719.08 = 79,130.77/x
  3. Step 3: Cross multiply
    140,369.47x = 193,719.08 × 79,130.77
  4. Step 4: Simplify right side
    140,369.47x = 15,329,139,964.09
  5. Step 5: Solve for x
    x = 15,329,139,964.09/140,369.47
  6. Step 6: Final answer
    x = 109,205.66

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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.