Home / 92,090.79-138,189.14-38,778.56

Finding the Fourth Proportional to 92,090.79, 138,189.14 and 38,778.56

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Solution

The fourth proportional to 92,090.79, 138,189.14 and 38,778.56 is: 58,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,090.79 : 138,189.14 = 38,778.56 : x
  2. Step 2: Convert to fraction form
    92,090.79/138,189.14 = 38,778.56/x
  3. Step 3: Cross multiply
    92,090.79x = 138,189.14 × 38,778.56
  4. Step 4: Simplify right side
    92,090.79x = 5,358,775,856.84
  5. Step 5: Solve for x
    x = 5,358,775,856.84/92,090.79
  6. Step 6: Final answer
    x = 58,190.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.