Home / 107,223.30-161,199.45-87,643.98

Finding the Fourth Proportional to 107,223.30, 161,199.45 and 87,643.98

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Solution

The fourth proportional to 107,223.30, 161,199.45 and 87,643.98 is: 131,763.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,223.30 : 161,199.45 = 87,643.98 : x
  2. Step 2: Convert to fraction form
    107,223.30/161,199.45 = 87,643.98/x
  3. Step 3: Cross multiply
    107,223.30x = 161,199.45 × 87,643.98
  4. Step 4: Simplify right side
    107,223.30x = 14,128,161,371.81
  5. Step 5: Solve for x
    x = 14,128,161,371.81/107,223.30
  6. Step 6: Final answer
    x = 131,763.91

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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.