Home / 103,936.03-143,428.22-65,716.15

Finding the Fourth Proportional to 103,936.03, 143,428.22 and 65,716.15

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Solution

The fourth proportional to 103,936.03, 143,428.22 and 65,716.15 is: 90,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,936.03 : 143,428.22 = 65,716.15 : x
  2. Step 2: Convert to fraction form
    103,936.03/143,428.22 = 65,716.15/x
  3. Step 3: Cross multiply
    103,936.03x = 143,428.22 × 65,716.15
  4. Step 4: Simplify right side
    103,936.03x = 9,425,549,702.61
  5. Step 5: Solve for x
    x = 9,425,549,702.61/103,936.03
  6. Step 6: Final answer
    x = 90,686.07

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1.5x scale

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.