Home / 136,693.60-188,642.64-76,269.52

Finding the Fourth Proportional to 136,693.60, 188,642.64 and 76,269.52

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Solution

The fourth proportional to 136,693.60, 188,642.64 and 76,269.52 is: 105,254.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,693.60 : 188,642.64 = 76,269.52 : x
  2. Step 2: Convert to fraction form
    136,693.60/188,642.64 = 76,269.52/x
  3. Step 3: Cross multiply
    136,693.60x = 188,642.64 × 76,269.52
  4. Step 4: Simplify right side
    136,693.60x = 14,387,683,604.33
  5. Step 5: Solve for x
    x = 14,387,683,604.33/136,693.60
  6. Step 6: Final answer
    x = 105,254.99

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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.