Home / 99,926.63-137,743.40-68,040.71

Finding the Fourth Proportional to 99,926.63, 137,743.40 and 68,040.71

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Solution

The fourth proportional to 99,926.63, 137,743.40 and 68,040.71 is: 93,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,926.63 : 137,743.40 = 68,040.71 : x
  2. Step 2: Convert to fraction form
    99,926.63/137,743.40 = 68,040.71/x
  3. Step 3: Cross multiply
    99,926.63x = 137,743.40 × 68,040.71
  4. Step 4: Simplify right side
    99,926.63x = 9,372,158,733.81
  5. Step 5: Solve for x
    x = 9,372,158,733.81/99,926.63
  6. Step 6: Final answer
    x = 93,790.40

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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.