Home / 139,127.16-191,994.12-75,464.04

Finding the Fourth Proportional to 139,127.16, 191,994.12 and 75,464.04

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Solution

The fourth proportional to 139,127.16, 191,994.12 and 75,464.04 is: 104,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,127.16 : 191,994.12 = 75,464.04 : x
  2. Step 2: Convert to fraction form
    139,127.16/191,994.12 = 75,464.04/x
  3. Step 3: Cross multiply
    139,127.16x = 191,994.12 × 75,464.04
  4. Step 4: Simplify right side
    139,127.16x = 14,488,651,951.44
  5. Step 5: Solve for x
    x = 14,488,651,951.44/139,127.16
  6. Step 6: Final answer
    x = 104,139.64

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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.