Home / 139,690.28-192,776.68-76,032.20

Finding the Fourth Proportional to 139,690.28, 192,776.68 and 76,032.20

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Solution

The fourth proportional to 139,690.28, 192,776.68 and 76,032.20 is: 104,926.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,690.28 : 192,776.68 = 76,032.20 : x
  2. Step 2: Convert to fraction form
    139,690.28/192,776.68 = 76,032.20/x
  3. Step 3: Cross multiply
    139,690.28x = 192,776.68 × 76,032.20
  4. Step 4: Simplify right side
    139,690.28x = 14,657,235,089.10
  5. Step 5: Solve for x
    x = 14,657,235,089.10/139,690.28
  6. Step 6: Final answer
    x = 104,926.66

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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.