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Finding the Fourth Proportional to 100,561.24, 150,905.40 and 56,217.12

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Solution

The fourth proportional to 100,561.24, 150,905.40 and 56,217.12 is: 84,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,561.24 : 150,905.40 = 56,217.12 : x
  2. Step 2: Convert to fraction form
    100,561.24/150,905.40 = 56,217.12/x
  3. Step 3: Cross multiply
    100,561.24x = 150,905.40 × 56,217.12
  4. Step 4: Simplify right side
    100,561.24x = 8,483,466,980.45
  5. Step 5: Solve for x
    x = 8,483,466,980.45/100,561.24
  6. Step 6: Final answer
    x = 84,361.20

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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.