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Finding the Fourth Proportional to 108,825.80, 163,238.44 and 61,419.40

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Solution

The fourth proportional to 108,825.80, 163,238.44 and 61,419.40 is: 92,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,825.80 : 163,238.44 = 61,419.40 : x
  2. Step 2: Convert to fraction form
    108,825.80/163,238.44 = 61,419.40/x
  3. Step 3: Cross multiply
    108,825.80x = 163,238.44 × 61,419.40
  4. Step 4: Simplify right side
    108,825.80x = 10,026,007,041.74
  5. Step 5: Solve for x
    x = 10,026,007,041.74/108,825.80
  6. Step 6: Final answer
    x = 92,128.95

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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.