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Finding the Fourth Proportional to 103,370.48, 142,664.49 and 63,075.71

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Solution

The fourth proportional to 103,370.48, 142,664.49 and 63,075.71 is: 87,052.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,370.48 : 142,664.49 = 63,075.71 : x
  2. Step 2: Convert to fraction form
    103,370.48/142,664.49 = 63,075.71/x
  3. Step 3: Cross multiply
    103,370.48x = 142,664.49 × 63,075.71
  4. Step 4: Simplify right side
    103,370.48x = 8,998,664,355.20
  5. Step 5: Solve for x
    x = 8,998,664,355.20/103,370.48
  6. Step 6: Final answer
    x = 87,052.56

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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.