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Finding the Fourth Proportional to 91,495.74, 137,290.59 and 69,301.74

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Solution

The fourth proportional to 91,495.74, 137,290.59 and 69,301.74 is: 103,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,495.74 : 137,290.59 = 69,301.74 : x
  2. Step 2: Convert to fraction form
    91,495.74/137,290.59 = 69,301.74/x
  3. Step 3: Cross multiply
    91,495.74x = 137,290.59 × 69,301.74
  4. Step 4: Simplify right side
    91,495.74x = 9,514,476,772.63
  5. Step 5: Solve for x
    x = 9,514,476,772.63/91,495.74
  6. Step 6: Final answer
    x = 103,988.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.