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Finding the Fourth Proportional to 108,534.80, 162,802.20 and 66,544.40

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Solution

The fourth proportional to 108,534.80, 162,802.20 and 66,544.40 is: 99,816.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,534.80 : 162,802.20 = 66,544.40 : x
  2. Step 2: Convert to fraction form
    108,534.80/162,802.20 = 66,544.40/x
  3. Step 3: Cross multiply
    108,534.80x = 162,802.20 × 66,544.40
  4. Step 4: Simplify right side
    108,534.80x = 10,833,574,717.68
  5. Step 5: Solve for x
    x = 10,833,574,717.68/108,534.80
  6. Step 6: Final answer
    x = 99,816.60

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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.