Home / 99,917.96-149,148.01-87,306.50

Finding the Fourth Proportional to 99,917.96, 149,148.01 and 87,306.50

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Solution

The fourth proportional to 99,917.96, 149,148.01 and 87,306.50 is: 130,322.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,917.96 : 149,148.01 = 87,306.50 : x
  2. Step 2: Convert to fraction form
    99,917.96/149,148.01 = 87,306.50/x
  3. Step 3: Cross multiply
    99,917.96x = 149,148.01 × 87,306.50
  4. Step 4: Simplify right side
    99,917.96x = 13,021,590,735.07
  5. Step 5: Solve for x
    x = 13,021,590,735.07/99,917.96
  6. Step 6: Final answer
    x = 130,322.82

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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.