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Finding the Fourth Proportional to 139,437.05, 192,422.39 and 75,775.10

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Solution

The fourth proportional to 139,437.05, 192,422.39 and 75,775.10 is: 104,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,437.05 : 192,422.39 = 75,775.10 : x
  2. Step 2: Convert to fraction form
    139,437.05/192,422.39 = 75,775.10/x
  3. Step 3: Cross multiply
    139,437.05x = 192,422.39 × 75,775.10
  4. Step 4: Simplify right side
    139,437.05x = 14,580,824,503.50
  5. Step 5: Solve for x
    x = 14,580,824,503.50/139,437.05
  6. Step 6: Final answer
    x = 104,569.23

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1.5x scale

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.