Home / 91,609.13-138,037.70-75,333.71

Finding the Fourth Proportional to 91,609.13, 138,037.70 and 75,333.71

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Solution

The fourth proportional to 91,609.13, 138,037.70 and 75,333.71 is: 113,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,609.13 : 138,037.70 = 75,333.71 : x
  2. Step 2: Convert to fraction form
    91,609.13/138,037.70 = 75,333.71/x
  3. Step 3: Cross multiply
    91,609.13x = 138,037.70 × 75,333.71
  4. Step 4: Simplify right side
    91,609.13x = 10,398,890,994.01
  5. Step 5: Solve for x
    x = 10,398,890,994.01/91,609.13
  6. Step 6: Final answer
    x = 113,513.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.