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Finding the Fourth Proportional to 91,491.70, 137,237.55 and 60,100.15

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Solution

The fourth proportional to 91,491.70, 137,237.55 and 60,100.15 is: 90,150.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,491.70 : 137,237.55 = 60,100.15 : x
  2. Step 2: Convert to fraction form
    91,491.70/137,237.55 = 60,100.15/x
  3. Step 3: Cross multiply
    91,491.70x = 137,237.55 × 60,100.15
  4. Step 4: Simplify right side
    91,491.70x = 8,247,997,340.63
  5. Step 5: Solve for x
    x = 8,247,997,340.63/91,491.70
  6. Step 6: Final answer
    x = 90,150.23

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1.5x scale

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.