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Finding the Fourth Proportional to 103,075.90, 144,422.90 and 103,075.90

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Solution

The fourth proportional to 103,075.90, 144,422.90 and 103,075.90 is: 144,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,075.90 : 144,422.90 = 103,075.90 : x
  2. Step 2: Convert to fraction form
    103,075.90/144,422.90 = 103,075.90/x
  3. Step 3: Cross multiply
    103,075.90x = 144,422.90 × 103,075.90
  4. Step 4: Simplify right side
    103,075.90x = 14,886,520,398.11
  5. Step 5: Solve for x
    x = 14,886,520,398.11/103,075.90
  6. Step 6: Final answer
    x = 144,422.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.