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Finding the Fourth Proportional to 109,010.20, 163,619.70 and 56,457.40

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Solution

The fourth proportional to 109,010.20, 163,619.70 and 56,457.40 is: 84,740.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,010.20 : 163,619.70 = 56,457.40 : x
  2. Step 2: Convert to fraction form
    109,010.20/163,619.70 = 56,457.40/x
  3. Step 3: Cross multiply
    109,010.20x = 163,619.70 × 56,457.40
  4. Step 4: Simplify right side
    109,010.20x = 9,237,542,850.78
  5. Step 5: Solve for x
    x = 9,237,542,850.78/109,010.20
  6. Step 6: Final answer
    x = 84,740.17

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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.