Home / 136,754.10-188,730.11-76,336.50

Finding the Fourth Proportional to 136,754.10, 188,730.11 and 76,336.50

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Solution

The fourth proportional to 136,754.10, 188,730.11 and 76,336.50 is: 105,349.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,754.10 : 188,730.11 = 76,336.50 : x
  2. Step 2: Convert to fraction form
    136,754.10/188,730.11 = 76,336.50/x
  3. Step 3: Cross multiply
    136,754.10x = 188,730.11 × 76,336.50
  4. Step 4: Simplify right side
    136,754.10x = 14,406,996,042.02
  5. Step 5: Solve for x
    x = 14,406,996,042.02/136,754.10
  6. Step 6: Final answer
    x = 105,349.65

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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.