Home / 140,309.30-193,631.08-76,651.20

Finding the Fourth Proportional to 140,309.30, 193,631.08 and 76,651.20

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Solution

The fourth proportional to 140,309.30, 193,631.08 and 76,651.20 is: 105,780.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,309.30 : 193,631.08 = 76,651.20 : x
  2. Step 2: Convert to fraction form
    140,309.30/193,631.08 = 76,651.20/x
  3. Step 3: Cross multiply
    140,309.30x = 193,631.08 × 76,651.20
  4. Step 4: Simplify right side
    140,309.30x = 14,842,054,639.30
  5. Step 5: Solve for x
    x = 14,842,054,639.30/140,309.30
  6. Step 6: Final answer
    x = 105,780.98

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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.