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Finding the Fourth Proportional to 108,901.83, 163,395 and 42,388.68

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Solution

The fourth proportional to 108,901.83, 163,395 and 42,388.68 is: 63,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,901.83 : 163,395 = 42,388.68 : x
  2. Step 2: Convert to fraction form
    108,901.83/163,395 = 42,388.68/x
  3. Step 3: Cross multiply
    108,901.83x = 163,395 × 42,388.68
  4. Step 4: Simplify right side
    108,901.83x = 6,926,098,368.60
  5. Step 5: Solve for x
    x = 6,926,098,368.60/108,901.83
  6. Step 6: Final answer
    x = 63,599.47

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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.