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Finding the Fourth Proportional to 139,085.55, 191,938.11 and 75,423.33

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Solution

The fourth proportional to 139,085.55, 191,938.11 and 75,423.33 is: 104,084.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,085.55 : 191,938.11 = 75,423.33 : x
  2. Step 2: Convert to fraction form
    139,085.55/191,938.11 = 75,423.33/x
  3. Step 3: Cross multiply
    139,085.55x = 191,938.11 × 75,423.33
  4. Step 4: Simplify right side
    139,085.55x = 14,476,611,410.11
  5. Step 5: Solve for x
    x = 14,476,611,410.11/139,085.55
  6. Step 6: Final answer
    x = 104,084.22

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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.