Home / 137,160.15-189,281.28-76,731.80

Finding the Fourth Proportional to 137,160.15, 189,281.28 and 76,731.80

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Solution

The fourth proportional to 137,160.15, 189,281.28 and 76,731.80 is: 105,890.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,160.15 : 189,281.28 = 76,731.80 : x
  2. Step 2: Convert to fraction form
    137,160.15/189,281.28 = 76,731.80/x
  3. Step 3: Cross multiply
    137,160.15x = 189,281.28 × 76,731.80
  4. Step 4: Simplify right side
    137,160.15x = 14,523,892,374.30
  5. Step 5: Solve for x
    x = 14,523,892,374.30/137,160.15
  6. Step 6: Final answer
    x = 105,890.03

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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.