Home / 136,928.02-188,942.07-76,491.22

Finding the Fourth Proportional to 136,928.02, 188,942.07 and 76,491.22

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Solution

The fourth proportional to 136,928.02, 188,942.07 and 76,491.22 is: 105,547.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,928.02 : 188,942.07 = 76,491.22 : x
  2. Step 2: Convert to fraction form
    136,928.02/188,942.07 = 76,491.22/x
  3. Step 3: Cross multiply
    136,928.02x = 188,942.07 × 76,491.22
  4. Step 4: Simplify right side
    136,928.02x = 14,452,409,443.63
  5. Step 5: Solve for x
    x = 14,452,409,443.63/136,928.02
  6. Step 6: Final answer
    x = 105,547.49

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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.