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Finding the Fourth Proportional to 193,639.80, 290,421.30 and 93,799.80

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Solution

The fourth proportional to 193,639.80, 290,421.30 and 93,799.80 is: 140,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,639.80 : 290,421.30 = 93,799.80 : x
  2. Step 2: Convert to fraction form
    193,639.80/290,421.30 = 93,799.80/x
  3. Step 3: Cross multiply
    193,639.80x = 290,421.30 × 93,799.80
  4. Step 4: Simplify right side
    193,639.80x = 27,241,459,855.74
  5. Step 5: Solve for x
    x = 27,241,459,855.74/193,639.80
  6. Step 6: Final answer
    x = 140,681.10

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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.