Home / 136,753.10-188,728.73-76,335.50

Finding the Fourth Proportional to 136,753.10, 188,728.73 and 76,335.50

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Solution

The fourth proportional to 136,753.10, 188,728.73 and 76,335.50 is: 105,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,753.10 : 188,728.73 = 76,335.50 : x
  2. Step 2: Convert to fraction form
    136,753.10/188,728.73 = 76,335.50/x
  3. Step 3: Cross multiply
    136,753.10x = 188,728.73 × 76,335.50
  4. Step 4: Simplify right side
    136,753.10x = 14,406,700,643.59
  5. Step 5: Solve for x
    x = 14,406,700,643.59/136,753.10
  6. Step 6: Final answer
    x = 105,348.26

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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.