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Finding the Fourth Proportional to 108,002.80, 162,004.20 and 55,417.60

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Solution

The fourth proportional to 108,002.80, 162,004.20 and 55,417.60 is: 83,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,002.80 : 162,004.20 = 55,417.60 : x
  2. Step 2: Convert to fraction form
    108,002.80/162,004.20 = 55,417.60/x
  3. Step 3: Cross multiply
    108,002.80x = 162,004.20 × 55,417.60
  4. Step 4: Simplify right side
    108,002.80x = 8,977,883,953.92
  5. Step 5: Solve for x
    x = 8,977,883,953.92/108,002.80
  6. Step 6: Final answer
    x = 83,126.40

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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.