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Finding the Fourth Proportional to 101,348.97, 139,860.63 and 56,028.12

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Solution

The fourth proportional to 101,348.97, 139,860.63 and 56,028.12 is: 77,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,348.97 : 139,860.63 = 56,028.12 : x
  2. Step 2: Convert to fraction form
    101,348.97/139,860.63 = 56,028.12/x
  3. Step 3: Cross multiply
    101,348.97x = 139,860.63 × 56,028.12
  4. Step 4: Simplify right side
    101,348.97x = 7,836,128,160.92
  5. Step 5: Solve for x
    x = 7,836,128,160.92/101,348.97
  6. Step 6: Final answer
    x = 77,318.28

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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.