Home / 103,866.28-143,332.07-65,646.34

Finding the Fourth Proportional to 103,866.28, 143,332.07 and 65,646.34

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Solution

The fourth proportional to 103,866.28, 143,332.07 and 65,646.34 is: 90,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,866.28 : 143,332.07 = 65,646.34 : x
  2. Step 2: Convert to fraction form
    103,866.28/143,332.07 = 65,646.34/x
  3. Step 3: Cross multiply
    103,866.28x = 143,332.07 × 65,646.34
  4. Step 4: Simplify right side
    103,866.28x = 9,409,225,800.12
  5. Step 5: Solve for x
    x = 9,409,225,800.12/103,866.28
  6. Step 6: Final answer
    x = 90,589.80

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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.