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Finding the Fourth Proportional to 139,673.97, 192,975.59 and 97,421.13

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Solution

The fourth proportional to 139,673.97, 192,975.59 and 97,421.13 is: 134,598.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,673.97 : 192,975.59 = 97,421.13 : x
  2. Step 2: Convert to fraction form
    139,673.97/192,975.59 = 97,421.13/x
  3. Step 3: Cross multiply
    139,673.97x = 192,975.59 × 97,421.13
  4. Step 4: Simplify right side
    139,673.97x = 18,799,899,553.11
  5. Step 5: Solve for x
    x = 18,799,899,553.11/139,673.97
  6. Step 6: Final answer
    x = 134,598.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.