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Finding the Fourth Proportional to 91,494.74, 137,289.10 and 69,300.74

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Solution

The fourth proportional to 91,494.74, 137,289.10 and 69,300.74 is: 103,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,494.74 : 137,289.10 = 69,300.74 : x
  2. Step 2: Convert to fraction form
    91,494.74/137,289.10 = 69,300.74/x
  3. Step 3: Cross multiply
    91,494.74x = 137,289.10 × 69,300.74
  4. Step 4: Simplify right side
    91,494.74x = 9,514,236,223.93
  5. Step 5: Solve for x
    x = 9,514,236,223.93/91,494.74
  6. Step 6: Final answer
    x = 103,986.70

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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.