Home / 99,917.60-149,147.43-87,306.10

Finding the Fourth Proportional to 99,917.60, 149,147.43 and 87,306.10

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Solution

The fourth proportional to 99,917.60, 149,147.43 and 87,306.10 is: 130,322.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,917.60 : 149,147.43 = 87,306.10 : x
  2. Step 2: Convert to fraction form
    99,917.60/149,147.43 = 87,306.10/x
  3. Step 3: Cross multiply
    99,917.60x = 149,147.43 × 87,306.10
  4. Step 4: Simplify right side
    99,917.60x = 13,021,480,065.45
  5. Step 5: Solve for x
    x = 13,021,480,065.45/99,917.60
  6. Step 6: Final answer
    x = 130,322.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.