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Finding the Fourth Proportional to 108,143.40, 148,153.98 and 104,100.30

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Solution

The fourth proportional to 108,143.40, 148,153.98 and 104,100.30 is: 142,615.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,143.40 : 148,153.98 = 104,100.30 : x
  2. Step 2: Convert to fraction form
    108,143.40/148,153.98 = 104,100.30/x
  3. Step 3: Cross multiply
    108,143.40x = 148,153.98 × 104,100.30
  4. Step 4: Simplify right side
    108,143.40x = 15,422,873,764.19
  5. Step 5: Solve for x
    x = 15,422,873,764.19/108,143.40
  6. Step 6: Final answer
    x = 142,615.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.