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Finding the Fourth Proportional to 112,242.40, 168,363.60 and 65,471.20

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Solution

The fourth proportional to 112,242.40, 168,363.60 and 65,471.20 is: 98,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,242.40 : 168,363.60 = 65,471.20 : x
  2. Step 2: Convert to fraction form
    112,242.40/168,363.60 = 65,471.20/x
  3. Step 3: Cross multiply
    112,242.40x = 168,363.60 × 65,471.20
  4. Step 4: Simplify right side
    112,242.40x = 11,022,966,928.32
  5. Step 5: Solve for x
    x = 11,022,966,928.32/112,242.40
  6. Step 6: Final answer
    x = 98,206.80

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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.