Home / 139,689.27-192,775.28-76,031.19

Finding the Fourth Proportional to 139,689.27, 192,775.28 and 76,031.19

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Solution

The fourth proportional to 139,689.27, 192,775.28 and 76,031.19 is: 104,925.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,689.27 : 192,775.28 = 76,031.19 : x
  2. Step 2: Convert to fraction form
    139,689.27/192,775.28 = 76,031.19/x
  3. Step 3: Cross multiply
    139,689.27x = 192,775.28 × 76,031.19
  4. Step 4: Simplify right side
    139,689.27x = 14,656,933,560.83
  5. Step 5: Solve for x
    x = 14,656,933,560.83/139,689.27
  6. Step 6: Final answer
    x = 104,925.26

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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.