Home / 137,769.89-190,122.35-77,340.65

Finding the Fourth Proportional to 137,769.89, 190,122.35 and 77,340.65

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Solution

The fourth proportional to 137,769.89, 190,122.35 and 77,340.65 is: 106,730.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,769.89 : 190,122.35 = 77,340.65 : x
  2. Step 2: Convert to fraction form
    137,769.89/190,122.35 = 77,340.65/x
  3. Step 3: Cross multiply
    137,769.89x = 190,122.35 × 77,340.65
  4. Step 4: Simplify right side
    137,769.89x = 14,704,186,128.53
  5. Step 5: Solve for x
    x = 14,704,186,128.53/137,769.89
  6. Step 6: Final answer
    x = 106,730.04

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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.