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Finding the Fourth Proportional to 139,646.51, 192,107.46 and 122,340.93

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Solution

The fourth proportional to 139,646.51, 192,107.46 and 122,340.93 is: 168,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,646.51 : 192,107.46 = 122,340.93 : x
  2. Step 2: Convert to fraction form
    139,646.51/192,107.46 = 122,340.93/x
  3. Step 3: Cross multiply
    139,646.51x = 192,107.46 × 122,340.93
  4. Step 4: Simplify right side
    139,646.51x = 23,502,605,316.34
  5. Step 5: Solve for x
    x = 23,502,605,316.34/139,646.51
  6. Step 6: Final answer
    x = 168,300.71

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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.