Home / 123,075.90-169,846.92-72,125.28

Finding the Fourth Proportional to 123,075.90, 169,846.92 and 72,125.28

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Solution

The fourth proportional to 123,075.90, 169,846.92 and 72,125.28 is: 99,534.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,075.90 : 169,846.92 = 72,125.28 : x
  2. Step 2: Convert to fraction form
    123,075.90/169,846.92 = 72,125.28/x
  3. Step 3: Cross multiply
    123,075.90x = 169,846.92 × 72,125.28
  4. Step 4: Simplify right side
    123,075.90x = 12,250,256,662.14
  5. Step 5: Solve for x
    x = 12,250,256,662.14/123,075.90
  6. Step 6: Final answer
    x = 99,534.16

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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.