Home / 137,416.20-189,639.81-76,987.35

Finding the Fourth Proportional to 137,416.20, 189,639.81 and 76,987.35

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Solution

The fourth proportional to 137,416.20, 189,639.81 and 76,987.35 is: 106,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,416.20 : 189,639.81 = 76,987.35 : x
  2. Step 2: Convert to fraction form
    137,416.20/189,639.81 = 76,987.35/x
  3. Step 3: Cross multiply
    137,416.20x = 189,639.81 × 76,987.35
  4. Step 4: Simplify right side
    137,416.20x = 14,599,866,426.40
  5. Step 5: Solve for x
    x = 14,599,866,426.40/137,416.20
  6. Step 6: Final answer
    x = 106,245.60

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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.