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Finding the Fourth Proportional to 139,364.70, 192,316.02 and 75,702.42

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Solution

The fourth proportional to 139,364.70, 192,316.02 and 75,702.42 is: 104,465.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,364.70 : 192,316.02 = 75,702.42 : x
  2. Step 2: Convert to fraction form
    139,364.70/192,316.02 = 75,702.42/x
  3. Step 3: Cross multiply
    139,364.70x = 192,316.02 × 75,702.42
  4. Step 4: Simplify right side
    139,364.70x = 14,558,788,118.77
  5. Step 5: Solve for x
    x = 14,558,788,118.77/139,364.70
  6. Step 6: Final answer
    x = 104,465.39

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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.