Home / 137,310.04-189,465.84-76,883.20

Finding the Fourth Proportional to 137,310.04, 189,465.84 and 76,883.20

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Solution

The fourth proportional to 137,310.04, 189,465.84 and 76,883.20 is: 106,086.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,310.04 : 189,465.84 = 76,883.20 : x
  2. Step 2: Convert to fraction form
    137,310.04/189,465.84 = 76,883.20/x
  3. Step 3: Cross multiply
    137,310.04x = 189,465.84 × 76,883.20
  4. Step 4: Simplify right side
    137,310.04x = 14,566,740,069.89
  5. Step 5: Solve for x
    x = 14,566,740,069.89/137,310.04
  6. Step 6: Final answer
    x = 106,086.49

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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.