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Finding the Fourth Proportional to 139,595.67, 192,555.63 and 121,733.55

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Solution

The fourth proportional to 139,595.67, 192,555.63 and 121,733.55 is: 167,916.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,595.67 : 192,555.63 = 121,733.55 : x
  2. Step 2: Convert to fraction form
    139,595.67/192,555.63 = 121,733.55/x
  3. Step 3: Cross multiply
    139,595.67x = 192,555.63 × 121,733.55
  4. Step 4: Simplify right side
    139,595.67x = 23,440,480,412.39
  5. Step 5: Solve for x
    x = 23,440,480,412.39/139,595.67
  6. Step 6: Final answer
    x = 167,916.96

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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.