Home / 103,562.28-142,954.08-90,949.80

Finding the Fourth Proportional to 103,562.28, 142,954.08 and 90,949.80

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Solution

The fourth proportional to 103,562.28, 142,954.08 and 90,949.80 is: 125,544.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,562.28 : 142,954.08 = 90,949.80 : x
  2. Step 2: Convert to fraction form
    103,562.28/142,954.08 = 90,949.80/x
  3. Step 3: Cross multiply
    103,562.28x = 142,954.08 × 90,949.80
  4. Step 4: Simplify right side
    103,562.28x = 13,001,644,985.18
  5. Step 5: Solve for x
    x = 13,001,644,985.18/103,562.28
  6. Step 6: Final answer
    x = 125,544.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.