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Finding the Fourth Proportional to 103,370.49, 142,673.49 and 63,075.60

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Solution

The fourth proportional to 103,370.49, 142,673.49 and 63,075.60 is: 87,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,370.49 : 142,673.49 = 63,075.60 : x
  2. Step 2: Convert to fraction form
    103,370.49/142,673.49 = 63,075.60/x
  3. Step 3: Cross multiply
    103,370.49x = 142,673.49 × 63,075.60
  4. Step 4: Simplify right side
    103,370.49x = 8,999,215,985.84
  5. Step 5: Solve for x
    x = 8,999,215,985.84/103,370.49
  6. Step 6: Final answer
    x = 87,057.88

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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.