Home / 136,824.08-188,815.45-76,395.76

Finding the Fourth Proportional to 136,824.08, 188,815.45 and 76,395.76

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Solution

The fourth proportional to 136,824.08, 188,815.45 and 76,395.76 is: 105,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,824.08 : 188,815.45 = 76,395.76 : x
  2. Step 2: Convert to fraction form
    136,824.08/188,815.45 = 76,395.76/x
  3. Step 3: Cross multiply
    136,824.08x = 188,815.45 × 76,395.76
  4. Step 4: Simplify right side
    136,824.08x = 14,424,699,802.49
  5. Step 5: Solve for x
    x = 14,424,699,802.49/136,824.08
  6. Step 6: Final answer
    x = 105,425.15

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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.