Home / 140,389.72-193,740.90-76,731.64

Finding the Fourth Proportional to 140,389.72, 193,740.90 and 76,731.64

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Solution

The fourth proportional to 140,389.72, 193,740.90 and 76,731.64 is: 105,891.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,389.72 : 193,740.90 = 76,731.64 : x
  2. Step 2: Convert to fraction form
    140,389.72/193,740.90 = 76,731.64/x
  3. Step 3: Cross multiply
    140,389.72x = 193,740.90 × 76,731.64
  4. Step 4: Simplify right side
    140,389.72x = 14,866,056,992.08
  5. Step 5: Solve for x
    x = 14,866,056,992.08/140,389.72
  6. Step 6: Final answer
    x = 105,891.35

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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.