Home / 136,728.77-188,685.35-76,298.78

Finding the Fourth Proportional to 136,728.77, 188,685.35 and 76,298.78

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Solution

The fourth proportional to 136,728.77, 188,685.35 and 76,298.78 is: 105,292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,728.77 : 188,685.35 = 76,298.78 : x
  2. Step 2: Convert to fraction form
    136,728.77/188,685.35 = 76,298.78/x
  3. Step 3: Cross multiply
    136,728.77x = 188,685.35 × 76,298.78
  4. Step 4: Simplify right side
    136,728.77x = 14,396,461,256.19
  5. Step 5: Solve for x
    x = 14,396,461,256.19/136,728.77
  6. Step 6: Final answer
    x = 105,292.11

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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.