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Finding the Fourth Proportional to 139,242.66, 192,154.95 and 75,580.44

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Solution

The fourth proportional to 139,242.66, 192,154.95 and 75,580.44 is: 104,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,242.66 : 192,154.95 = 75,580.44 : x
  2. Step 2: Convert to fraction form
    139,242.66/192,154.95 = 75,580.44/x
  3. Step 3: Cross multiply
    139,242.66x = 192,154.95 × 75,580.44
  4. Step 4: Simplify right side
    139,242.66x = 14,523,155,669.18
  5. Step 5: Solve for x
    x = 14,523,155,669.18/139,242.66
  6. Step 6: Final answer
    x = 104,301.05

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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.