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Finding the Fourth Proportional to 139,041.34, 191,775.13 and 91,277.26

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Solution

The fourth proportional to 139,041.34, 191,775.13 and 91,277.26 is: 125,895.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,041.34 : 191,775.13 = 91,277.26 : x
  2. Step 2: Convert to fraction form
    139,041.34/191,775.13 = 91,277.26/x
  3. Step 3: Cross multiply
    139,041.34x = 191,775.13 × 91,277.26
  4. Step 4: Simplify right side
    139,041.34x = 17,504,708,402.54
  5. Step 5: Solve for x
    x = 17,504,708,402.54/139,041.34
  6. Step 6: Final answer
    x = 125,895.71

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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.