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Finding the Fourth Proportional to 91,324.40, 136,986.60 and 63,330.80

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Solution

The fourth proportional to 91,324.40, 136,986.60 and 63,330.80 is: 94,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,324.40 : 136,986.60 = 63,330.80 : x
  2. Step 2: Convert to fraction form
    91,324.40/136,986.60 = 63,330.80/x
  3. Step 3: Cross multiply
    91,324.40x = 136,986.60 × 63,330.80
  4. Step 4: Simplify right side
    91,324.40x = 8,675,470,967.28
  5. Step 5: Solve for x
    x = 8,675,470,967.28/91,324.40
  6. Step 6: Final answer
    x = 94,996.20

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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.