Home / 99,484.40-149,771.26-90,775.28

Finding the Fourth Proportional to 99,484.40, 149,771.26 and 90,775.28

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Solution

The fourth proportional to 99,484.40, 149,771.26 and 90,775.28 is: 136,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,484.40 : 149,771.26 = 90,775.28 : x
  2. Step 2: Convert to fraction form
    99,484.40/149,771.26 = 90,775.28/x
  3. Step 3: Cross multiply
    99,484.40x = 149,771.26 × 90,775.28
  4. Step 4: Simplify right side
    99,484.40x = 13,595,528,062.45
  5. Step 5: Solve for x
    x = 13,595,528,062.45/99,484.40
  6. Step 6: Final answer
    x = 136,659.90

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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.