Home / 136,877.77-188,889.28-76,449.43

Finding the Fourth Proportional to 136,877.77, 188,889.28 and 76,449.43

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Solution

The fourth proportional to 136,877.77, 188,889.28 and 76,449.43 is: 105,499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,877.77 : 188,889.28 = 76,449.43 : x
  2. Step 2: Convert to fraction form
    136,877.77/188,889.28 = 76,449.43/x
  3. Step 3: Cross multiply
    136,877.77x = 188,889.28 × 76,449.43
  4. Step 4: Simplify right side
    136,877.77x = 14,440,477,789.11
  5. Step 5: Solve for x
    x = 14,440,477,789.11/136,877.77
  6. Step 6: Final answer
    x = 105,499.07

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1.5x scale

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.